Online Tools & Utilities

Estimate personal injury settlement using the multiplier method — medical expenses, lost income, and pain & suffering.

Estimate workers compensation benefits from weekly wage, disability rating, and benefit duration.

Calculate federal estate tax owed based on estate value and current exemption amount.

Estimate child support payments using the income-shares model based on both parents' incomes.

Calculate how much life insurance you need using the DIME method — Debt, Income, Mortgage, Education.

Calculate FHA loan monthly payments including upfront MIP and annual mortgage insurance premiums.

Calculate Private Mortgage Insurance (PMI) costs for conventional loans with less than 20% down.

Calculate how many months it takes to recoup refinancing closing costs from monthly savings.

Calculate your debt-to-income ratio to see if you qualify for a mortgage.

Calculate your Home Equity Line of Credit limit and monthly interest-only payments.

Calculate how long it takes to pay off multiple credit cards using avalanche or snowball method.

Simulate how financial actions affect your credit score with what-if analysis.

Calculate the true Annual Percentage Rate (APR) of a loan including fees.

Calculate capital gains tax on stocks, crypto, and real estate using 2025 federal brackets.

Calculate the tax implications and long-term benefits of converting a Traditional IRA to Roth.

Calculate your Required Minimum Distribution from retirement accounts using IRS tables.

Project your 529 plan savings growth and compare it to future college costs.

Calculate solar panel ROI, payback period, and 25-year savings based on system size and rates.

Compare the total cost of ownership between an electric vehicle and a gas car.

Compare the cost of living between US and international cities to see how far your salary goes.

Calculate annual and monthly property tax based on assessed value and rate.

Calculate cap rate from net operating income and property value.

Calculate cash-on-cash return from annual cash flow and invested cash.

Calculate GRM from property price and gross annual rental income.

Calculate NOI from gross income minus operating expenses.

Calculate DSCR from net operating income and annual debt service.

Calculate LTV ratio from loan amount and property value.

Determine how much home you can afford based on income and debts.

Calculate gross and net rental income from rent and expenses.

Calculate property appreciation over time with annual rate.

Convert between acres, square feet, square meters, and hectares.

Calculate FAR from total floor area and lot size.

Calculate square footage of rooms, houses, and lots.

Calculate acreage from length and width in feet.

Calculate lot dimensions and area from various measurements.

Calculate fencing cost from perimeter length and price per foot.

Calculate landscaping cost from area and price per square foot.

Calculate home renovation cost from project type and area.

Estimate home insurance cost from dwelling coverage and rate.

Calculate property management fees from rent and percentage rate.

Calculate closing costs from home price and local rates.

Estimate home inspection cost from property size and type.

Calculate home staging cost from rooms and monthly rate.

Free online PDF tools to merge, compress, split, and convert PDF files in your browser. No uploads, no signup.

Compress JPG and PNG images online for free without losing quality. Batch compression with live preview.

Convert images between JPG, PNG, WebP and more formats.

Convert text to natural speech online for free. Multiple English voices, no registration required.

Create custom QR codes for links, text, and contact info. Free online QR generator with custom colors.

Pick colors and convert between HEX, RGB and HSL formats.

Count words, characters, sentences, and reading time in real-time. Free online word counter.

Convert length, weight, and temperature units instantly. Free online unit converter — metric and imperial.

Real-time currency conversion with live exchange rates.

Generate strong, secure passwords with customizable options. Free online password generator.

Generate random numbers within any range instantly.

A precise countdown timer and stopwatch in your browser.

Set a countdown to any date or duration with alerts.

Calculate exact age in years, months, and days from any date. Free online age calculator.

Calculate Body Mass Index (BMI) instantly with metric or imperial units. Free online BMI calculator.

Calculate percentages, increases, decreases and ratios.

Test your typing speed in WPM and improve your accuracy.

Validate, format, prettify, and minify JSON data online for free. Instant syntax error detection.

Encode and decode HTML entities for safe web output.

Encode and decode URLs for safe query parameters.

Generate MD5 and SHA hashes for any text input.

Compare two blocks of text and highlight the differences.

Count sentences and analyze sentence length for better readability.

Count paragraphs and analyze paragraph length and structure.

Count letters, vowels, consonants, digits, and characters in any text.

Analyze word frequency and keyword density in any text.

Analyze character frequency with visual bars for each letter and symbol.

Reverse text by characters, words, or lines instantly.

Repeat any text multiple times with custom separators.

Split text by comma, space, newline, semicolon, or pipe delimiter.

Join multiple lines of text into a single line with a chosen delimiter.

Trim leading and trailing whitespace from every line of text.

Remove duplicate lines from any text, keeping only unique lines.

Remove blank and empty lines from any text instantly.

Sort lines of text alphabetically in ascending order (A to Z).

Sort lines of text numerically by the leading number on each line.

Reverse the order of lines in any text — last line becomes first.

Randomly shuffle the order of lines in any text for fair randomization.

Convert text to UPPERCASE, lowercase, Title Case, Sentence case, and more.

Convert any number into its English word representation instantly.

Convert written English number words back into numeric digits.

Convert decimal numbers to binary representation instantly.

Convert binary numbers back to decimal representation.

Convert decimal numbers to octal (base-8) representation.

Convert octal (base-8) numbers back to decimal.

Convert decimal numbers to hexadecimal (base-16) representation.

Convert hexadecimal (base-16) numbers back to decimal.

Convert decimal numbers to Roman numeral representation.

Convert Roman numerals back to decimal numbers.

Check whether a number is prime and see its factors.

Generate a list of prime numbers within any range.

Generate the Fibonacci sequence up to any count of terms.

Calculate the factorial (n!) of any non-negative integer.

Calculate the Greatest Common Divisor of two or more numbers.

Calculate the Least Common Multiple of two or more numbers.

Generate secure random PIN codes of any length.

Generate one-time passwords (OTP) with digits, letters, or mixed.

Minify JSON by removing whitespace for compact API payloads.

Convert JSON arrays to CSV format for spreadsheets.

Convert CSV data to JSON arrays for APIs.

Convert JSON to XML for legacy systems and SOAP.

Convert XML to JSON for modern web apps.

Minify HTML by removing comments and whitespace.

Format and prettify HTML with indentation.

Minify CSS by removing whitespace and comments.

Format and prettify CSS with indentation.

Minify JavaScript by removing comments and whitespace.

Format and prettify JavaScript with indentation.

Format SQL queries with proper line breaks.

Minify SQL queries by removing whitespace.

Format and prettify XML with indentation.

Minify XML by removing whitespace and comments.

Convert YAML config files to JSON format.

Convert JSON to YAML for config files and CI/CD.

Test regex patterns against text with live matching.

Generate regex from descriptions and common patterns.

Check if a network port is open on a remote host.

Validate IPv4 and IPv6 addresses.

Validate email addresses for correct format.

Validate URLs for correct format and protocol.

Minify HTML, CSS, JS, JSON, XML, and SQL in one tool.

Check password strength with real-time feedback.

Generate SHA-1 and SHA-512 hashes using Web Crypto.

Encode text to Base64 for data URLs and APIs.

Decode Base64 strings back to text.

Encode text to Base32 for TOTP and DNS.

Decode Base32 strings back to text.

Encode text to hexadecimal representation.

Decode hex strings back to text.

Encode text to binary (0s and 1s).

Decode binary strings back to text.

Encrypt text with Caesar cipher and custom shift.

Decrypt Caesar cipher text by reversing the shift.

Encrypt/decrypt with Atbash cipher (alphabet reversal).

Encode/decode text with ROT13 (self-inverse).

Obfuscate text as HTML entities to deter bots.

Encrypt and decrypt text with AES-256-GCM using Web Crypto API.

Generate HMAC signatures with SHA-1/256/384/512 for API auth.

Generate RFC 4122 v4 UUIDs using crypto.randomUUID().

Generate secure random tokens for API keys and sessions.

Generate cryptographic nonces for CSP headers and OAuth.

Encrypt/decrypt with Vigenère polyalphabetic cipher.

Encrypt/decrypt using XOR bitwise operations with a key.

Encode/decode text with ROT47 (full ASCII shift cipher).

Encrypt/decrypt with custom alphabet substitution.

Translate text to Morse code and Morse code to text.

Validate card numbers with Luhn algorithm and detect brand.

Validate IBAN with MOD-97 checksum for 30+ countries.

Decode JWT header and payload to inspect claims.

Remove dangerous HTML to prevent XSS attacks.

Hide and reveal secret text messages inside images.

Simple calculator for basic arithmetic operations.

Calculate tips and split bills among groups.

Calculate sale prices and savings from discounts.

Calculate sales tax and total cost including tax.

Calculate monthly loan payments and total interest.

Calculate mortgage payments and total cost.

Project savings growth with compound interest.

Project investment growth with compound returns.

Advanced calculator with trig and log functions.

Add, subtract, multiply, and divide fractions.

Convert decimals to simplified fractions.

Convert fractions to decimal numbers.

Calculate percentage increase between two values.

Calculate percentage decrease between two values.

Calculate percentage difference between two values.

Calculate days, weeks, months between two dates.

Find the day of the week for any date.

Find the number of days in any month.

Check if any year is a leap year.

Convert times between world time zones.

View current time in major cities worldwide.

Count down to any future date in real time.

Count down to your next birthday.

Create a custom countdown to any event.

Calculate work hours from start/end times.

Calculate overtime pay with custom multipliers.

Convert HEX color codes to RGB format.

Convert RGB values to HEX color codes.

Convert HEX to HSL for intuitive color adjustment.

Convert HSL values to HEX color codes.

Generate 5-shade palettes from a base color.

Create CSS gradients with two colors and angle.

Create CSS box shadows with live preview.

Create CSS border radius with corner control.

Create CSS text shadows with live preview.

Browse curated font pairings for web design.

Calculate aspect ratios from dimensions.

Convert pixels to rem, em, and pt units.

Browse and copy 100+ emojis instantly.

Generate random color palettes for inspiration.

Resize images to custom dimensions in your browser.

Rotate images by any angle in your browser.

Convert images to grayscale (black and white).

Apply vintage sepia tone to images.

Merge multiple text files into one.

Split large text files into smaller chunks.

Calculate total size of multiple files.

Generate SHA-256 and SHA-1 hashes for files.

View file metadata: name, size, type, date.

Convert speech to text using Web Speech API.

Generate random words for brainstorming.

Generate random names for testing and creative work.

Generate inspirational quotes from famous figures.

Generate random emojis for content creation.

Generate Lorem Ipsum placeholder text for designs and mockups.

Convert titles to clean, SEO-friendly URL slugs.

Find and replace text using powerful regular expressions.

Analyze text readability with Flesch Reading Ease and Grade Level.

Convert text into ASCII art banners using block characters.

Check color contrast ratios against WCAG 2.1 accessibility standards.

Visually generate CSS Flexbox layouts with live preview.

Visually generate CSS Grid layouts with custom columns and rows.

Generate CSS animations with live preview and presets.

Create custom favicons from text and colors.

Optimize and minify SVG code by removing unnecessary data.

Calculate your Grade Point Average from course credits and grades.

Calculate final grades from weighted assignments and exams.

Calculate fuel cost for trips based on distance and MPG.

Calculate Return on Investment and annualized returns.

Calculate the break-even point for your business.

Calculate selling price from cost and markup percentage.

Solve quadratic equations and find real and complex roots.

Flip a virtual coin for heads or tails decisions.

Roll virtual dice with any number of sides.

Pick a random item from a list for contests and decisions.

Split names into random teams for sports and activities.

Generate random lottery numbers for any lottery format.

Get a random answer to your yes/no questions.

Boost productivity with 25-minute focus sessions and breaks.

Generate white noise for focus, sleep, and relaxation.

Track daily habits and build streaks with a 30-day grid.

Convert Markdown to HTML instantly with full syntax support.

Convert HTML to Markdown for documentation and READMEs.

View CSV data in a clean table format instantly.

Generate HTML and Markdown tables with custom dimensions.

Parse URLs into components: protocol, host, path, query, fragment.

Convert images to Base64 data URLs for embedding in HTML.

Pick colors from any image and get exact HEX codes.

Convert images to ASCII art with adjustable width and detail.

Take quick notes saved locally in your browser. No account needed.

Calculate cryptocurrency trading profits, losses, and ROI instantly.

Convert between cryptocurrencies and fiat currencies with live rates.

Track your crypto portfolio performance and total holdings value.

Calculate return on investment for cryptocurrency holdings.

Calculate dollar-cost averaging strategy results for crypto and stocks.

Estimate capital gains taxes on cryptocurrency trades and holdings.

Calculate staking rewards and APY for proof-of-stake cryptocurrencies.

Calculate return on investment for stock market positions.

Calculate profit and loss on stock trades with commission support.

Calculate dividend income and yield from stock holdings.

Calculate compound interest growth with flexible compounding periods.

Project investment growth over time with contributions and returns.

Compare multiple stock investments side by side with key metrics.

Calculate risk/reward ratio for trading positions and setups.

Calculate pip value for forex trading positions across currency pairs.

Calculate optimal lot size for forex trades based on risk management.

Calculate profit and loss in forex trades with pip values.

Calculate your total net worth from assets and liabilities.

Calculate the impact of inflation on purchasing power over time.

Calculate how much you need to save for retirement and track progress.

Take quick notes saved locally in your browser. No account needed.

Simplify fractions to their lowest terms instantly.

Add two fractions and get the result in simplified form.

Subtract two fractions and get the result in simplified form.

Multiply two fractions and get the result in simplified form.

Divide two fractions and get the result in simplified form.

Convert mixed numbers to improper fractions and decimals.

Calculate the square root of any number instantly.

Calculate the cube root of any number, including negatives.

Calculate the power of a number (exponentiation) instantly.

Calculate logarithms with any base (log10, ln, log2, custom).

Calculate the natural logarithm (ln) of any positive number.

Convert numbers to and from scientific notation instantly.

Round numbers to any decimal place with ceil, floor, and truncate.

Calculate the absolute value (modulus) of any number.

Calculate the remainder (modulo) after division instantly.

Simplify ratios to lowest terms and compare two quantities.

Solve proportional equations (a/b = c/d) by finding the missing value.

Calculate the average (mean) of any set of numbers instantly.

Find the median of any set of numbers instantly.

Find the mode (most frequent value) of any set of numbers.

Find the range (max - min) of any set of numbers instantly.

Calculate variance and standard deviation with sample/population options.

Calculate standard deviation of any dataset with sample/population options.

Calculate mean absolute deviation (MAD) of any dataset.

Calculate quartiles (Q1, Q2, Q3) and interquartile range (IQR).

Find any percentile of a dataset instantly (0-100).

Generate stem and leaf plots from any dataset for visualization.

Generate histograms from any dataset with customizable bins.

Calculate box plot statistics: five-number summary, IQR, and outliers.

Generate scatter plots from X,Y data pairs to visualize relationships.

Calculate linear regression (best-fit line) from X,Y data pairs.

Calculate Pearson correlation coefficient (r) from data pairs.

Calculate R² (coefficient of determination) from data pairs.

Calculate chi-square statistic from observed and expected frequencies.

Calculate t-test statistic to compare means of two groups.

Calculate one-way ANOVA (F-statistic) across multiple groups.

Calculate confidence intervals for a mean from sample data.

Calculate the margin of error for survey and sample data.

Calculate the required sample size for surveys and experiments.

Calculate simple interest loan payments and total interest.

Calculate monthly car loan payments with down payment support.

Calculate student loan payments and total repayment costs.

Calculate home loan payments including PITI for complete monthly cost.

Calculate total debt balance and weighted average interest rate.

Calculate debt snowball payoff timeline by paying smallest debts first.

Calculate debt avalanche payoff by paying highest-interest debts first.

Generate a loan amortization schedule with principal and interest breakdown.

Determine how much home you can afford using standard lending ratios.

Compare the financial costs of renting vs buying a home.

Calculate how much emergency fund you need based on monthly expenses.

Calculate how much you need to save for retirement using the 4% rule.

Calculate savings growth with compound interest and monthly contributions.

Calculate how long to reach your savings goal with contributions and interest.

Create a monthly budget with income, expenses, and savings rate.

Create an annual budget with yearly income and expenses.

Calculate household budget with per-person cost breakdown.

Calculate business budget with revenue, expenses, and profit margin.

Track daily expenses by category with automatic totals.

Track monthly income from multiple sources with breakdown.

Calculate net income from gross income by subtracting taxes and deductions.

Convert gross salary to net take-home pay with detailed tax breakdown.

Calculate your paycheck amount per pay period with withholdings.

Convert hourly wage to annual, monthly, and weekly salary.

Convert hourly wage to annual salary instantly.

Convert annual salary to hourly wage instantly.

Calculate bonus amounts from percentage or flat rate with tax.

Calculate sales commission from sales amount and commission rate.

Calculate profit margin and markup from revenue and cost.

Calculate gross profit and gross margin from revenue and COGS.

Calculate operating profit and margin from revenue and expenses.

Calculate net profit and net margin from all revenue and expenses.

Calculate markdown amounts and final prices for retail.

Calculate GST by adding or extracting from any amount at any rate.

Calculate VAT by adding or extracting from any amount at any rate.

Split a restaurant bill evenly among people with tip calculation.

Calculate total travel costs including fuel, hotel, and food.

Calculate maternity leave pay based on salary and paid percentage.

Calculate paternity leave pay for new fathers.

Calculate severance pay based on salary and years of service.

Calculate pension payments based on salary, years, and multiplier.

Calculate 401(k) growth with employer match and compound interest.

Calculate IRA growth with annual contributions and compound interest.

Calculate Roth IRA growth with tax-free withdrawals.

Estimate Social Security retirement benefits by age and salary.

Calculate how much life insurance coverage you need.

Calculate total health insurance costs including all components.

Calculate term life insurance premiums by coverage and rate.

Calculate endowment fund growth with principal and contributions.

Calculate your daily calorie needs based on age, weight, height, and activity level.

Calculate calories burned during exercise and daily activities.

Calculate your calorie deficit for weight loss goals.

Calculate your calorie surplus for weight gain and muscle building.

Calculate your Basal Metabolic Rate — calories burned at complete rest.

Calculate Total Daily Energy Expenditure based on BMR and activity.

Calculate your ideal body weight based on height and frame size.

Estimate your body fat percentage using the US Navy method.

Calculate your lean body mass from weight and body fat percentage.

Estimate your muscle mass from body weight and body fat percentage.

Calculate your waist-to-hip ratio and assess health risk.

Calculate waist-to-height ratio for cardiovascular risk assessment.

Calculate your heart rate training zones for optimal exercise.

Calculate your target heart rate for cardiovascular exercise.

Calculate your maximum heart rate for safe exercise training.

Check your blood pressure category from systolic and diastolic readings.

Calculate your pregnancy due date from your last menstrual period.

Predict your ovulation dates and fertile window.

Calculate your most fertile days based on your menstrual cycle.

Estimate your conception date from your due date or last period.

Estimate fetal weight during pregnancy from ultrasound measurements.

Calculate your baby's due date from your last menstrual period (LMP).

Calculate your recommended daily water intake based on weight and activity.

Calculate ideal bedtime and wake time based on 90-minute sleep cycles.

Calculate your sleep cycles to find optimal wake-up times.

Calculate the ideal nap duration for maximum refreshment.

Estimate calories burned per activity using MET values.

Calculate your running pace from distance and time.

Calculate your swimming pace per 100 meters or yards.

Calculate your cycling pace and speed from distance and time.

Calculate your walking pace and estimated completion time.

Convert your step count to distance walked in miles or kilometers.

Convert a walking distance into an estimated step count.

Calculate your weight loss timeline and daily calorie target.

Calculate your weight gain timeline and daily calorie surplus.

Calculate your daily meal plan macros and calorie distribution.

Calculate your daily protein needs based on weight and activity.

Calculate your daily carbohydrate needs for energy and performance.

Calculate your daily fat intake needs for a balanced diet.

Calculate your daily fiber needs for digestive health.

Calculate your recommended daily sodium intake limits.

Calculate your recommended daily added sugar intake limit.

Check your cholesterol category from total, HDL, and LDL values.

Calculate force using F = mass × acceleration.

Calculate mechanical work from force and distance.

Calculate energy from work done using the work-energy principle.

Calculate power from work done and time elapsed.

Calculate acceleration from change in velocity and time.

Calculate velocity from displacement and time.

Calculate speed from distance traveled and time elapsed.

Calculate distance from speed and time traveled.

Calculate momentum from mass and velocity.

Calculate impulse from force and time applied.

Calculate gravitational force between two masses.

Calculate weight from mass and gravitational acceleration.

Calculate density from mass and volume.

Calculate pressure from force applied over an area.

Calculate the buoyant force on an object submerged in fluid.

Calculate torque from force and lever arm distance.

Calculate angular velocity from angle and time.

Calculate angular acceleration from change in angular velocity.

Calculate friction force from coefficient and normal force.

Calculate tension in a rope or cable supporting a load.

Calculate stress from force applied over a cross-sectional area.

Calculate strain from change in length and original length.

Calculate Young's modulus from stress and strain.

Calculate water density at different temperatures.

Calculate air density at different altitudes and temperatures.

Calculate the speed of sound in different media and temperatures.

Calculate wavelength from wave speed and frequency.

Calculate frequency from wave speed and wavelength.

Calculate the period of a wave from its frequency.

Calculate wave speed from wavelength and frequency.

Calculate lens power from focal length in diopters.

Calculate focal length from object and image distances.

Calculate magnification from image and object sizes.

Calculate illuminance from luminous flux and area in lux.

Calculate luminous intensity in candelas from flux and angle.

Calculate voltage from current and resistance (Ohm's Law).

Calculate current from voltage and resistance using Ohm's Law.

Calculate resistance from voltage and current (Ohm's Law).

Calculate electrical power from voltage and current in watts.

Calculate capacitance from charge and voltage.

Calculate inductance from voltage, current change rate, and time.

Calculate impedance in an AC circuit from resistance and reactance.

Calculate transformer turns ratio from primary and secondary voltages.

Calculate power factor from real power and apparent power.

Calculate estimated battery life from capacity and load current.

Calculate keyword density in your text to optimize content for search engines.

Count how many times each keyword appears in your text for SEO analysis.

Generate related LSI keywords from your content to improve topical relevance.

Group keywords by topic to organize your keyword lists for content planning.

Cluster keywords by theme to identify content topics and pillar page opportunities.

Remove common stop words from your text for cleaner keyword analysis.

Suggest keywords from your text by combining primary terms with common SEO modifiers.

Generate questions from your content for FAQ sections and PAA optimization.

Analyze headline quality and appeal based on power words, length, and emotional impact.

Generate powerful words and headlines for your titles to boost click-through rates.

Extract 2-3 word keyword phrases from your content to identify key topics.

Check Flesch Reading Ease score and grade level to ensure your content is readable.

Analyze word count, character count, paragraphs, and reading time for SEO content.

Detect passive voice sentences in your content to improve clarity and engagement.

Detect excessive adverbs in your writing to strengthen your prose.

Analyze sentence length distribution to improve readability and engagement.

Analyze paragraph length distribution to improve content readability for web readers.

Check transition word usage to improve content flow and readability.

Find duplicate sentences within your content to ensure originality.

Analyze the sentiment of your text as positive, negative, or neutral.

Analyze the writing tone of your content — formal, informal, confident, urgent, or friendly.

Create a visual word cloud from your text to identify key themes at a glance.

Auto-summarize long text by extracting the most important sentences.

Analyze text complexity with Gunning Fog Index, syllable density, and complex word percentage.

Count unique words in your text and calculate lexical diversity ratio.

Analyze average word length in your text to gauge vocabulary complexity.

Check title tag length and preview how it appears in search results.

Check meta description length and preview how it appears in search results.

Extract and display all meta tags from your HTML for SEO auditing.

Check heading hierarchy (H1-H6) in your HTML for proper SEO structure.

Check if your HTML has a proper canonical tag to prevent duplicate content issues.

Check image alt text in your HTML for accessibility and SEO compliance.

Analyze all links in your HTML — internal, external, and nofollow — for SEO auditing.

Check Open Graph meta tags for proper social media sharing previews.

Check Twitter Card meta tags for proper Twitter sharing previews.

Check for JSON-LD structured data and microdata schema markup in your HTML.

Check robots meta tag directives for index/noindex and follow/nofollow settings.

Check viewport meta tag for proper mobile rendering and mobile-first indexing.

Check hreflang tags for international SEO and multi-language targeting.

Check for potentially broken links in your HTML — empty hrefs, JavaScript links, and insecure links.

Preview how your page appears in Google search results with title, URL, and description.

Calculate your overall SEO score with a 20-point checklist covering on-page, technical, and content SEO.

See how search engines view your page — stripped of scripts, styles, and HTML tags.

Analyze your HTML page size including scripts, styles, images, and text content.

Calculate the area and perimeter of a rectangle from length and width.

Calculate the area of a triangle from base and height.

Calculate the area, circumference, and diameter of a circle.

Calculate the area of a trapezoid from its parallel sides and height.

Calculate the area of an ellipse from its semi-major and semi-minor axes.

Calculate the volume and surface area of a cube.

Calculate the volume of a cylinder in cubic feet and gallons.

Calculate the volume and surface area of a sphere.

Calculate the volume of a cone from radius and height.

Calculate the volume of a rectangular pyramid.

Calculate concrete volume in cubic yards and bags for slabs and footings.

Calculate gravel needed in cubic yards and tons for driveways and paths.

Calculate sand needed in cubic yards and tons for paver bases and playgrounds.

Calculate topsoil needed in cubic yards and bags for garden beds and lawns.

Calculate mulch needed in cubic yards and bags for garden beds.

Calculate paint gallons needed for walls, ceilings, and rooms.

Calculate wallpaper rolls needed for any room.

Calculate tiles needed for floors and walls with waste factor.

Calculate flooring material in square feet and boxes for hardwood and laminate.

Calculate roofing squares and shingle bundles with pitch factor.

Calculate bricks needed for walls and patios with mortar joints.

Calculate concrete blocks (CMU) needed for walls and foundations.

Calculate board feet and linear feet for lumber projects.

Calculate drywall sheets needed for walls and ceilings.

Calculate insulation batts and square footage for walls and attics.

Calculate carpet needed in square yards for rooms and stairs.

Calculate fence posts, rails, and pickets for any fence length.

Calculate deck boards, joists, and screws for your deck.

Calculate pavers needed for driveways, patios, and walkways.

Calculate landscaping material for garden beds, paths, and decorative areas.

Calculate grass seed needed in pounds for new lawns and overseeding.

Calculate fertilizer needed in pounds for lawns and gardens.

Calculate weed killer concentrate in ounces for lawns and beds.

Calculate pool water volume in gallons for any pool shape.

Calculate pond water volume in gallons and liters for any shape.

Calculate the geometric mean of positive numbers for growth rates and ratios.

Calculate the harmonic mean for rates, speeds, and frequencies.

Calculate the weighted mean for GPAs, portfolios, and weighted grades.

Calculate IQR (Q3-Q1) for measuring data spread and detecting outliers.

Calculate Z-scores to find how many standard deviations a value is from the mean.

Calculate t-scores for hypothesis testing with small samples.

Calculate confidence intervals for population proportions in survey analysis.

Perform post-hoc pairwise comparisons after ANOVA.

Non-parametric test comparing three or more independent groups.

Non-parametric test comparing two independent groups.

Non-parametric test for paired samples.

Calculate odds ratio and CI for 2x2 tables in case-control studies.

Calculate relative risk and CI for cohort studies.

Calculate NNT from absolute risk reduction for clinical research.

Calculate positive and negative likelihood ratios for diagnostic tests.

Calculate sensitivity (true positive rate) of diagnostic tests.

Calculate specificity (true negative rate) of diagnostic tests.

Generate ROC curve data points and AUC for diagnostic test evaluation.

Calculate your one-rep max (1RM) from weight and reps using proven formulas.

Estimate your 5-rep max from weight lifted and reps performed.

Estimate your 10-rep max for hypertrophy training zone planning.

Calculate calories burned and METs for bodyweight exercises like push-ups and squats.

Calculate the right dumbbell weight based on your strength level and exercise type.

Calculate total barbell weight including plates, collars, and bar weight.

Determine the right kettlebell weight for swings, presses, and snatches.

Calculate equivalent resistance band tension for your dumbbell exercises.

Calculate running distance from pace and time for route planning.

Calculate your running speed in mph and km/h from distance and time.

Calculate calories burned running based on weight, distance, and pace.

Calculate calories burned cycling based on weight, speed, and duration.

Calculate calories burned swimming by stroke type, weight, and duration.

Calculate calories burned walking based on weight, distance, and speed.

Calculate step height and calories for aerobic step workouts.

Calculate ideal hold times for yoga poses based on level and style.

Calculate ideal stretching duration by muscle group and flexibility level.

Calculate optimal warm-up duration based on activity type and intensity.

Calculate ideal cool-down duration for safe post-workout recovery.

Calculate core workout time, reps, and sets for your fitness level.

Calculate upper body workout volume, sets, and reps for strength training.

Calculate lower body workout volume, sets, and reps for leg training.

Calculate full body workout structure, sets, reps, and rest periods.

Calculate muscle recovery time between workouts based on intensity.

Calculate deload week volume and intensity for injury prevention.

Calculate total training program duration from sessions per week and weeks.

Calculate progressive overload steps for weight, reps, and sets over time.

Calculate heart rate recovery time and fitness level from resting and peak HR.

Estimate your fitness age from VO2 max, resting heart rate, and activity level.

Determine your activity level and daily calorie multiplier (TDEE factor).

Scale any recipe up or down by desired number of servings.

Adjust recipe ingredient amounts for a different serving size.

Convert ingredient weights between grams, ounces, and pounds.

Convert ingredient volumes between cups, tablespoons, and milliliters.

Convert oven temperatures between Celsius, Fahrenheit, and gas marks.

Convert baking pan sizes and adjust batter for different pan dimensions.

Calculate cake pan volume in cups and milliliters from pan dimensions.

Scale cookie recipes by batch size and calculate dough yield.

Scale bread recipes by loaf count and calculate baker's percentages.

Calculate pizza dough ingredients by ball count and weight.

Calculate dry and cooked pasta quantities for any number of people.

Calculate dry rice and water ratios for perfect rice every time.

Calculate meat cooking time by weight and doneness level.

Calculate turkey roasting time by weight for perfect Thanksgiving results.

Calculate ham cooking time by weight and type (fresh or smoked).

Calculate ideal cooking times for vegetables by type and method.

Calculate perfect egg boiling time for soft, medium, or hard boiled.

Calculate drink mixing ratios for cocktails and beverages by servings.

Calculate coffee-to-water ratio for perfect brew strength by cups.

Calculate tea-to-water ratio and steeping time by cups and type.

Convert sugar amounts to natural substitutes like stevia and erythritol.

Convert between all-purpose, bread, cake, and whole wheat flour.

Convert between whole, skim, almond, and oat milk by fat content.

Convert between olive, vegetable, coconut, and canola oil by smoke point.

Convert butter between sticks, cups, tablespoons, grams, and ounces.

Convert between table salt, kosher salt, and sea salt by volume.

Convert between fresh and dried herbs with correct substitution ratios.

Convert spice amounts between whole, ground, and powder forms.

Calculate food cost per serving and recipe cost from ingredient prices.

Calculate total cooking time from prep, active, and passive time.

Calculate mechanical advantage of levers, pulleys, and gears.

Calculate gear ratio, speed, and torque between two gears.

Calculate pulley mechanical advantage and effort force for lifting.

Calculate lever forces and mechanical advantage for any lever class.

Calculate deflection of a simply supported beam under a center point load.

Calculate bending stress in a beam using the flexure formula.

Calculate shear stress from shear force and cross-sectional area.

Calculate torsional (shear) stress in a circular shaft under torque.

Calculate critical buckling load for a column using Euler's formula.

Calculate member forces in a simple triangular truss using method of joints.

Calculate volumetric flow rate from pipe diameter and velocity.

Calculate pressure drop and flow in a pipe using the Darcy-Weisbach equation.

Calculate required pump power from flow rate and total head.

Calculate required fan airflow and power for ventilation systems.

Calculate required compressor capacity and power for air systems.

Calculate required motor power from torque and speed.

Calculate belt drive ratio, speed, and length for pulley systems.

Calculate chain drive ratio, speed, and chain length for sprocket systems.

Calculate bearing dynamic and static load capacity for shaft applications.

Calculate spring constant (stiffness) using Hooke's Law.

Convert between AWG wire gauge and diameter in millimeters.

Calculate transformer kVA rating from load power and power factor.

Calculate conduit fill percentage per NEC guidelines.

Calculate circuit breaker size from load current per NEC rules.

Calculate voltage drop in a wire from current, length, and wire size.

Calculate capacitor size needed to improve power factor.

Calculate number of light fixtures needed for a room based on lumens.

Estimate heating and cooling load for a room based on area and climate.

Calculate duct diameter from airflow and target velocity.

Calculate pipe diameter from flow rate and target velocity.

Calculate tank volume from dimensions for cylindrical and rectangular tanks.

Calculate thin-wall pressure vessel hoop and longitudinal stress.

Calculate heat transfer rate in a heat exchanger using LMTD method.

Calculate insulation thickness to prevent condensation or heat loss.

Calculate combined noise level from multiple sources using decibel addition.

Calculate natural frequency of a spring-mass system for vibration analysis.

Calculate worst-case and statistical tolerance stack-up for assemblies.

Convert between Ra, Rz, and RMS surface roughness measurements.

Convert between Brinell, Rockwell, and Vickers hardness scales.

Calculate weight of metal plates, bars, and shapes from dimensions and density.

Calculate the geometric mean of a set of positive numbers.

Calculate the harmonic mean of a set of numbers.

Calculate the weighted mean of values with assigned weights.

Calculate the interquartile range (IQR) of a data set.

Calculate the Z-score of a value relative to a mean and standard deviation.

Calculate the T-score from a Z-score or raw data.

Calculate confidence interval for a population proportion.

Calculate post-hoc pairwise comparisons after ANOVA.

Perform the Kruskal-Wallis non-parametric test for comparing groups.

Perform the Mann-Whitney U non-parametric test for two samples.

Perform the Wilcoxon signed-rank test for paired samples.

Calculate the odds ratio for a 2x2 contingency table.

Calculate relative risk and risk difference from a 2x2 table.

Calculate NNT from absolute risk reduction.

Calculate positive and negative likelihood ratios for diagnostic tests.

Calculate sensitivity of a diagnostic test from true positives.

Calculate specificity of a diagnostic test from true negatives.

Generate ROC curve data points from sensitivity and specificity.

Calculate annual and monthly property tax based on assessed value and rate.

Calculate cap rate from net operating income and property value.

Calculate cash-on-cash return from annual cash flow and invested cash.

Calculate GRM from property price and gross annual rental income.

Calculate NOI from gross income minus operating expenses.

Calculate DSCR from net operating income and annual debt service.

Calculate LTV ratio from loan amount and property value.

Determine how much home you can afford based on income and debts.

Calculate gross and net rental income from rent and expenses.

Calculate property appreciation over time with annual rate.

Convert between acres, square feet, square meters, and hectares.

Calculate FAR from total floor area and lot size.

Calculate square footage of rooms, houses, and lots.

Calculate acreage from length and width in feet.

Calculate lot dimensions and area from various measurements.

Calculate fencing cost from perimeter length and price per foot.

Calculate landscaping cost from area and price per square foot.

Calculate home renovation cost from project type and area.

Estimate home insurance cost from dwelling coverage and rate.

Calculate property management fees from rent and percentage rate.

Calculate closing costs from home price and local rates.

Estimate home inspection cost from property size and type.

Calculate home staging cost from rooms and monthly rate.