Small tools for everyday tasks.

◔ Age Calculator

Exact age in years, months, and days from any birth date.

◑ BMI Calculator

Body Mass Index with category and healthy weight range.

◧ DEVELOPER Featured

◧ JSON Formatter

Format, validate, and minify JSON with clear error messages.

◐ Password Generator

Strong, random passwords generated locally in your browser.

◕ Percentage Calculator

Find a percentage, a percent share, or percent change.

Featured

◔ Age Calculator

Exact age in years, months, and days from any birth date.

◑ BMI Calculator

Body Mass Index with category and healthy weight range.

◧ DEVELOPER Featured

◧ JSON Formatter

Format, validate, and minify JSON with clear error messages.

◈ FINANCE Featured

◈ Loan Calculator

Monthly payment, total interest, and total cost for any loan.

Trending this week

◐ Password Generator

Strong, random passwords generated locally in your browser.

◒ Word Counter

Live word, character, sentence, and reading-time counts.

Recently added

▦ Email Address Validator

Check a list of email addresses for valid syntax and strip duplicates in one pass.

▥ Text Diff Checker

Compare two blocks of text line by line and highlight what was added or removed.

◩ CONVERTERS New

▤ CSV to Markdown Table

Convert CSV data into a formatted Markdown table for READMEs, docs and issues.

▣ SQL IN Clause Generator

Turn a pasted list of IDs or values into a ready-to-run SQL IN clause.

◈ Binary to Text Converter

Decode 8-bit binary back into readable text instantly in your browser.

◕ Age in Days Calculator

Count exactly how many days, weeks, hours and minutes you have been alive.

◔ Time Card Calculator

Add up worked hours from clock-in and clock-out times, minus breaks, with weekly pay.

◓ Sleep Cycle Calculator

Find bedtimes and wake times that land between 90-minute sleep cycles so you wake up refreshed.

◒ One Rep Max Calculator

Estimate your 1RM from any set and get training percentages for every rep range.

◑ Loan Affordability Calculator

Find the loan and home price you can afford from income, debts and a debt-to-income limit.

◐ Stock Average Calculator

Average down or up across multiple buys and see your break-even price and return.

▣ Calculators 49 tools ▤ Text Tools 22 tools ◧ Developer 36 tools ◈ Finance 33 tools ▥ Security 5 tools ▦ PDF Tools 26 tools ◨ Image Tools 7 tools ◩ Converters 26 tools ◪ Generators 17 tools ◑ Health 22 tools

◫ APY Calculator

Convert a nominal interest rate into the true annual percentage yield after compounding.

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◩ 401(k) Retirement Calculator

Project your 401(k) balance from salary, contribution rate, employer match and returns.

◫ APY Calculator

Convert a nominal interest rate into the true annual percentage yield after compounding.

◫ Acronym Generator

Turn any phrase into acronym options for project names, teams and product codes.

◑ Add Line Numbers to Text

Number every line of pasted text with custom start, separator and zero padding.

◔ Add Page Numbers to PDF

Stamp page numbers onto a PDF with your chosen position, starting number, and font size. Free and fully browser-based.

◕ Add Watermark to PDF

Add a diagonal text watermark such as DRAFT or CONFIDENTIAL to every page of a PDF. Free, private, browser-based.

◒ Add or Subtract Days from a Date

Add or subtract days, weeks, months, or years from any date and see the exact resulting date.

◔ Age Calculator

Exact age in years, months, and days from any birth date.

◕ Age in Days Calculator

Count exactly how many days, weeks, hours and minutes you have been alive.

◓ Amortization Schedule Calculator

See how a loan splits between interest and principal, year one and over the full term.

◒ Angle Converter

Convert degrees, radians, gradians, milliradians and full turns instantly.

◨ Area Calculator

Calculate the area and perimeter of rectangles, squares, circles, triangles, and trapezoids.

◧ Aspect Ratio Calculator

Work out image and video aspect ratios and resize dimensions without distortion.

◧ Average Calculator

Calculate mean, median, mode, range, and standard deviation from any list of numbers.

◑ BMI Calculator

Body Mass Index with category and healthy weight range.

◕ BMR Calculator

Calculate your basal metabolic rate with the Mifflin-St Jeor equation and see daily calorie needs by activity level.

◨ Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 back to text, with full Unicode and URL-safe support.

◈ Binary to Text Converter

Decode 8-bit binary back into readable text instantly in your browser.

◨ Blood Alcohol (BAC) Calculator

Estimate blood alcohol concentration from drinks, body weight and time elapsed.

▣ Body Fat Calculator

Estimate body fat percentage with the US Navy tape method and see your fat and lean mass in kilos.

◔ Border Radius Generator

Generate CSS border-radius code for rounded corners, pills and organic blob shapes.

◓ Box Shadow Generator

Create CSS box-shadow code with offset, blur, spread, color and inset options.

◫ Break-Even Calculator

Find how many units you must sell to cover fixed costs, plus the break-even revenue point.

◓ Business Days Calculator

Count working days between two dates, skipping weekends, and see total days and weeks.

◈ CAGR Calculator

Calculate compound annual growth rate between two values over any number of years.

◒ CSS Gradient Generator

Build linear and radial CSS gradients visually and copy production-ready CSS.

◧ CSS Minifier

Minify CSS to shrink stylesheet size, or expand minified CSS back into readable rules.

◧ CSV Column Extractor

Pull a single column out of pasted CSV data, with quote handling and de-duplication.

◪ CSV to JSON Converter

Convert CSV data into a clean JSON array, with quoted fields and custom delimiters handled correctly.

◩ CONVERTERS New

▤ CSV to Markdown Table

Convert CSV data into a formatted Markdown table for READMEs, docs and issues.

▤ Caesar Cipher Encoder & Decoder

Encode or decode text with a Caesar shift cipher, including ROT13, in your browser.

◈ Calorie Calculator

Estimate daily calories to maintain, lose, or gain weight based on your age, sex, size, and activity.

◩ Car Loan Calculator

Estimate monthly car payments, total interest and the amount financed after your down payment.

◈ Case Converter

Convert text between UPPERCASE, lowercase, Title Case, and Sentence case instantly.

◑ Character Counter

Count characters with and without spaces, plus words, lines, and social-post limits.

◩ Child Height Predictor

Estimate a child's adult height from both parents' heights using the mid-parental method.

◧ Circle Calculator

Enter a radius, diameter, circumference, or area and get every other circle measurement instantly.

◐ Coin Flip

Flip a virtual coin once or a hundred times and see heads/tails counts and percentages.

◈ Color Contrast Checker

Check text and background colour contrast against WCAG AA and AAA accessibility thresholds.

◫ Color Converter

Convert colors between HEX, RGB, HSL, and CSS values with a live preview swatch.

◪ Color Palette Generator

Build analogous, complementary, triadic or monochrome palettes from any hex colour.

▦ Compare PDF

Compare two PDFs and see exactly which lines were added, removed or changed. Side-by-side text diff, free and offline.

◨ Compound Interest Calculator

Project savings growth with compound interest and regular monthly contributions.

◗ Compress PDF

Shrink a large PDF by re-rendering its pages at a lower resolution and quality. Free, private, browser-based compression.

◔ Concrete Calculator

Estimate concrete volume in cubic metres, cubic yards and bags for a slab or footing.

◓ Cooking Measurement Converter

Convert cups, tablespoons, teaspoons, milliliters, fluid ounces and liters for recipes.

◑ Credit Card Payoff Calculator

See how many months a fixed monthly payment needs to clear your card, and the interest cost.

◒ Cron Expression Parser

Decode any five-field cron expression into plain English before you deploy it.

◒ Crop PDF

Trim white margins from PDF pages by setting how much to cut from each edge. Free, private and browser-based.

◧ Currency Converter

Convert between 14 major currencies offline, or paste today's rate for an exact figure.

◪ Data Storage Converter

Convert bytes, KB, MB, GB, TB and their binary KiB/MiB/GiB equivalents accurately.

◫ Date Difference Calculator

Count the days, weeks, months, and working days between any two dates.

▣ Date to Timestamp Converter

Turn any calendar date and time into a Unix epoch timestamp in seconds and milliseconds.

▣ Debt to Income Ratio Calculator

Work out your DTI ratio the way mortgage lenders do, front-end and back-end.

◫ Dice Roller

Roll virtual dice online — d4, d6, d8, d10, d12, d20 and d100 with totals and modifiers.

◪ Discount Calculator

Calculate the sale price and money saved from any percentage discount, including stacked offers.

◒ Down Payment Calculator

Work out the deposit you need on a home and how long it takes to save it.

◑ Electricity Cost Calculator

Work out what any appliance costs to run per day, month and year from its wattage.

▦ Email Address Validator

Check a list of email addresses for valid syntax and strip duplicates in one pass.

◨ Emergency Fund Calculator

Work out how big your emergency fund should be and how long it takes to get there.

◐ Energy Converter

Convert joules, calories, kilowatt-hours, BTU and electronvolts in a single step.

◨ Exponent Calculator

Raise any number to any power, including negative and fractional exponents, and see the result instantly.

◒ Extract Email Addresses from Text

Pull every email address out of pasted text, de-duplicated and ready to paste.

◩ Extract PDF Pages

Pick the pages you need from a PDF and save them as a new document. Free, private, browser-based page extraction.

◓ Extract URLs from Text

Find every link in pasted text or HTML, optionally reduced to unique domains.

◪ Factorial Calculator

Compute the factorial of any whole number up to 170, with exact results for small values.

◔ Final Grade Calculator

The score you need on the final exam to hit your target grade.

◫ Find and Replace Text

Find and replace text across a whole document, with case-insensitive, whole-word, and regex modes.

◒ Fraction Calculator

Add, subtract, multiply, and divide fractions, simplified.

◩ CONVERTERS New

▦ Frequency Converter

Convert between hertz, kilohertz, megahertz, gigahertz, RPM and BPM with period output.

◕ Fuel Economy Converter

Convert MPG (US), MPG (UK), km/L and L/100km to compare vehicle efficiency.

◐ GCD and LCM Calculator

Find the greatest common divisor and least common multiple of two or three numbers in one step.

◓ GPA Calculator

Weighted grade point average from your courses and credits.

▣ GPA Scale Converter

Convert grades between 4.0, 5.0, percentage and UK degree classifications.

◪ GST Calculator

Add or remove GST at any rate and see the tax portion of a price instantly.

◪ HTML Entity Encoder / Decoder

Escape HTML special characters into entities, or decode entities back into readable text.

◫ HTML Formatter

Beautify messy HTML with clean indentation, or minify it down for production.

◕ HTTP Status Code Lookup

Look up any HTTP status code with its meaning, class and default cache behaviour.

◪ Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text, entirely in your browser.

◐ Hashtag Generator

Generate relevant hashtag sets for Instagram, TikTok and X from a few keywords.

◩ Heart Rate Zone Calculator

Find your maximum heart rate and the five training zones for fat burn, endurance, and threshold work.

◫ Hourly to Salary Calculator

Convert an hourly wage into weekly, monthly and yearly salary figures instantly.

▥ Htaccess Redirect Generator

Turn a list of old and new URLs into Apache .htaccess or nginx redirect rules.

◕ IP Subnet Calculator

Calculate network address, broadcast, subnet mask, host range and usable hosts from any IPv4 CIDR.

▤ Ideal Weight Calculator

See your ideal body weight range from four clinical formulas plus the healthy BMI range for your height.

◑ Image Compressor

Shrink JPG, PNG, and WebP files in your browser with an adjustable quality slider.

◕ Image Cropper

Crop an image to an exact region or a preset aspect ratio, entirely in your browser.

◐ Image Resizer

Resize any image to exact pixel dimensions, with optional aspect-ratio lock, in your browser.

◧ Image Rotator and Flipper

Rotate an image by 90 degree steps or flip it horizontally and vertically, then download the result.

◫ Image to Base64 Converter

Convert any image into a Base64 data URI you can embed directly in HTML or CSS.

▦ Image to PDF

Convert PNG, JPG or WebP images into a single PDF. Choose page size, orientation and margins. Free and fully offline in your browser.

◫ Inflation Calculator

See how inflation changes prices and erodes the buying power of your money over time.

◕ Invoice Total Calculator

Add quantity, discount, tax and shipping to get an accurate invoice total in seconds.

◓ JPG to PDF

Turn JPG, PNG, and WebP images into a single PDF document. Reorder pages, choose page size, all in your browser.

◔ JPG to WebP Converter

Convert JPG and PNG images to WebP for much smaller files at the same visual quality.

▦ JSON Escape / Unescape

Escape text into a safe JSON string value, or unescape one back into readable text.

◧ DEVELOPER Featured

◧ JSON Formatter

Format, validate, and minify JSON with clear error messages.

◫ JSON to CSV Converter

Convert a JSON array of objects into CSV you can open directly in Excel, Numbers, or Sheets.

◪ JSON to YAML Converter

Convert JSON into clean, readable YAML for config files, CI pipelines, and Kubernetes manifests.

◪ JWT Decoder

Decode a JSON Web Token to read its header and payload claims, including expiry, locally.

◪ JavaScript Minifier

Strip comments and needless whitespace from JavaScript to cut file size before deployment.

◩ Keyword Density Checker

Count keyword frequency and density in any text to spot thin or over-optimised copy.

◑ Lean Body Mass Calculator

Estimate lean mass, fat mass and body fat percentage from height, weight and sex.

◧ Length Converter

Convert between meters, kilometers, miles, feet, inches, yards, centimeters and more instantly.

◑ Loan Affordability Calculator

Find the loan and home price you can afford from income, debts and a debt-to-income limit.

◈ FINANCE Featured

◈ Loan Calculator

Monthly payment, total interest, and total cost for any loan.

◩ Logarithm Calculator

Calculate log base 10, natural log, log base 2, or a log with any custom base for any positive number.

◧ Lorem Ipsum Generator

Generate placeholder Lorem Ipsum paragraphs, sentences, or words for mockups and layouts.

◈ MIME Type Lookup

Find the correct MIME type for any file extension, or the extensions behind a MIME type.

▥ Macro Calculator

Split your daily calories into protein, carbs, and fat grams for cutting, maintenance, or bulking.

◫ Markdown Preview

Write Markdown and see the rendered HTML live, then copy the generated markup.

◪ Markup Calculator

Convert between cost, selling price, markup percentage and profit margin.

◔ Mean Median Mode Calculator

Get the mean, median, mode, and range of any list of numbers with one paste.

◪ Meta Tag Generator

Generate SEO title, description, Open Graph, and Twitter Card meta tags for any page.

◪ Meta Title & Description Checker

Check meta title and description length against Google's limits with a SERP preview.

▦ Morse Code Translator

Translate English text to Morse code and decode Morse back to plain text instantly.

◫ Mortgage Calculator

Estimate your monthly mortgage payment, total interest, and payoff cost from price, deposit, rate, and term.

◧ Net Worth Calculator

Add up assets and subtract debts to see your true net worth and debt-to-asset ratio.

◪ Number Base Converter

Convert numbers between binary, octal, decimal, hexadecimal, and any base from 2 to 36.

▤ Number to Words Converter

Spell out any number in English words, including currency-style output for cheques and invoices.

◒ One Rep Max Calculator

Estimate your 1RM from any set and get training percentages for every rep range.

◫ Organize PDF

Rearrange, duplicate, or reverse the pages of a PDF by typing a new page order. Free and fully browser-based.

▤ Oven Temperature Converter

Convert oven temperatures between Celsius, Fahrenheit, gas mark and fan settings.

◐ Overtime Pay Calculator

Work out overtime earnings at time-and-a-half, double time or any custom multiplier.

◨ Ovulation Calculator

Predict your ovulation day and fertile window from your last period and cycle length.

◪ PDF Info

Inspect a PDF: page count, page dimensions, title, author, producer, and creation date — read locally in your browser.

▦ PDF Merge

Combine multiple PDF files into one document, right in your browser.

▦ PDF Metadata Editor

View and edit PDF title, author, subject, keywords and creator, or strip metadata completely for privacy. Free and offline.

▦ PDF N-Up (Multiple Pages Per Sheet)

Print 2, 4, 6 or 9 PDF pages on a single sheet to save paper. Choose layout, orientation and page order. Free browser tool.

◖ PDF to JPG

Convert every page of a PDF into a JPG image at your chosen resolution and quality, entirely in your browser.

▦ PDF to Markdown

Convert a PDF into clean Markdown with headings, lists and paragraphs detected automatically. Free, private, browser-based.

▦ PDF to Text

Extract all text from a PDF and copy it or download it as a .txt file. Works offline in your browser, no upload required.

◨ PIN Generator

Generate secure random PIN codes of any length using your browser's cryptographic randomness.

◓ PNG to JPG Converter

Convert PNG images to JPG with a chosen background colour and quality, right in your browser.

◒ Paint Calculator

Estimate how many litres of paint a room needs from its dimensions and coat count.

▥ SECURITY New

◩ Passphrase Generator

Create memorable, high-entropy passphrases from random words with separators and numbers.

◐ Password Generator

Strong, random passwords generated locally in your browser.

◪ Password Strength Checker

Test how strong a password is, see its entropy in bits, and estimate how long it would take to crack.

◒ Percent Error Calculator

Compare a measured value with the true value and get percent error, absolute error, and relative error.

◕ Percentage Calculator

Find a percentage, a percent share, or percent change.

◈ Permutation and Combination Calculator

Calculate nPr permutations and nCr combinations for any n and r, with factorial detail.

◑ Power Converter

Convert watts, kilowatts, horsepower, BTU per hour and more with precise factors.

◧ Pregnancy Due Date Calculator

Estimate your due date and current pregnancy week from your last menstrual period or conception date.

◧ Pregnancy Week Calculator

Find out how many weeks pregnant you are, your trimester and the estimated due date.

◫ Pressure Converter

Convert pascals, bar, psi, atmospheres, torr and mmHg with laboratory-grade factors.

◫ Prime Number Checker

Check whether any number is prime, see its factors, and find the next prime above it.

◕ Probability Calculator

Work out single-event probability, the odds against, and the chance of an event happening across repeated trials.

◫ Profit Margin Calculator

Work out gross profit, profit margin, and markup from your cost and selling price.

◐ Proportion Calculator

Solve a/b = c/d for any missing value using cross multiplication.

▦ Protein Intake Calculator

Work out how much protein to eat each day for health, training or fat loss.

◪ Pythagorean Theorem Calculator

Find the missing side of a right triangle from any two known sides using a² + b² = c².

◑ Quadratic Equation Solver

Solve any quadratic equation ax² + bx + c = 0 and see both roots, the discriminant, and the vertex.

◪ ROI Calculator

Calculate return on investment, net profit, and annualised return for any investment.

◧ Random Color Generator

Generate random colors with HEX, RGB and HSL values, ready to paste into any design tool.

◕ Random Date Generator

Generate random dates between two bounds for testing, sampling and planning.

◈ Random Letter Generator

Pick random letters of the alphabet for games, name ideas and classroom activities.

◑ Random List Picker

Paste a list and pick random winners, shuffle the order, or split it into fair teams.

◨ Random Name Generator

Generate fantasy, brand, username or pet names instantly, with re-rollable batches.

◪ Random Number Generator

Generate random numbers in any range, with or without duplicates, using secure randomness.

◑ Random String Generator

Generate cryptographically random strings, hex tokens or numeric codes in bulk.

◧ Random Team Generator

Split a list of names into balanced random teams for sport, class or work.

◫ Ratio Calculator

Simplify ratios, solve for a missing value, and scale ratios to any total.

▣ Ratio Simplifier

Simplify any ratio to its lowest terms, scale it up, and convert it to a fraction, decimal, and percentage.

◫ Readability Score Checker

Score any text with Flesch Reading Ease and Flesch-Kincaid grade level instantly.

◨ Reading Time Calculator

Estimate how long an article takes to read or speak from its word count.

▦ Redact PDF

Permanently black out parts of a PDF. Boxes are burned into flattened page images so hidden text cannot be recovered. Free and private.

◫ Regex Tester

Test a regular expression against sample text and see every match, group, and index live.

◐ Remove Duplicate Lines

Strip duplicate lines from a list, with optional trimming, case-insensitive matching, and sorting.

▦ Remove Extra Spaces

Strip duplicate spaces, stray tabs and blank lines from pasted text in one click.

◨ Remove PDF Pages

Delete unwanted pages from a PDF and download the cleaned-up document. Free, private, and entirely browser-based.

◪ Rent vs Buy Calculator

Compare the monthly and first-year cost of buying a home against renting one.

▦ Repair PDF

Fix PDFs that will not open. Rebuilds the file structure, recovers readable pages and writes a clean copy — free and offline.

▦ Resize PDF Pages

Change PDF page size to A4, Letter, A3 or A5, or scale pages by a percentage. Keeps content sharp and centred. Free online.

▤ Retirement Savings Calculator

Project your retirement pot from current savings, monthly contributions and expected returns.

◫ Reverse Text

Reverse text by characters, words, or lines, and flip line order for quick text manipulation.

◈ Ring Size Converter

Convert ring sizes between US, EU, Japan, diameter and inside circumference.

▤ Robots.txt Generator

Generate a valid robots.txt with disallow rules, allow overrides, sitemap and crawl delay.

◧ Roman Numeral Converter

Convert numbers to Roman numerals and Roman numerals back to numbers, from 1 to 3999.

◐ Rotate PDF

Rotate every page or just selected pages of a PDF and save the corrected document. Free, private, browser-based.

▥ Rounding Calculator

Round any number to decimal places, significant figures, or the nearest ten, hundred, or thousand.

◪ Running Pace Calculator

Convert a race time and distance into pace per kilometre and per mile, and predict finish times.

◫ SQL Formatter

Format SQL queries with clause-per-line layout and uppercase keywords for easy review.

▣ SQL IN Clause Generator

Turn a pasted list of IDs or values into a ready-to-run SQL IN clause.

◩ Salary Calculator

Convert pay between hourly, daily, weekly, monthly, and annual figures using your own schedule.

◧ Sales Tax Calculator

Add sales tax to a price or work backwards from a tax-inclusive total to find the net amount.

◧ Savings Goal Calculator

Work out how much to save each month to hit a target amount by a chosen date, with interest.

▦ Scan to PDF

Use your phone camera to scan documents straight into a PDF. Auto contrast and grayscale, multi-page, nothing uploaded.

▤ Scientific Notation Converter

Convert numbers to and from scientific notation, engineering notation, and plain decimal form.

◕ Shoe Size Converter

Convert shoe sizes between US, UK, EU and foot length in centimetres.

◑ Sign PDF

Add a typed signature and date to any page of a PDF, positioned where you want it. Free, private and browser-based.

◩ Simple Interest Calculator

Calculate simple interest and the total repayable amount from principal, rate and time.

◫ Sleep Calculator

Find the best times to go to bed or wake up based on 90-minute sleep cycles.

◓ Sleep Cycle Calculator

Find bedtimes and wake times that land between 90-minute sleep cycles so you wake up refreshed.

◐ Sleep Debt Calculator

Find out how much sleep you owe yourself this week and how long recovery takes.

◫ Slope Calculator

Find the slope, angle, distance, and line equation between two points on a graph.

◔ Speed Converter

Convert km/h, mph, m/s, knots and feet per second with one click.

◧ Split PDF

Split a PDF into separate documents by page range, or burst every page into its own file. Runs entirely in your browser.

◧ Square Root Calculator

Find the square root, cube root, or any nth root of a number instantly, with exact and rounded output.

◓ Standard Deviation Calculator

Paste a list of numbers to get standard deviation, variance, mean, and the full five-number summary.

◐ Stock Average Calculator

Average down or up across multiple buys and see your break-even price and return.

◪ Strip HTML Tags

Remove HTML tags from markup and get clean plain text, with optional line-break preservation.

▥ TDEE Calculator

Calculate total daily energy expenditure and the calorie targets for losing or gaining weight.

◔ Tax Bracket Calculator

Estimate income tax across progressive brackets and see your effective versus marginal rate.

◩ Temperature Converter

Convert Celsius, Fahrenheit, Kelvin and Rankine instantly, with all four scales shown at once.

◧ Text Diff Checker

Compare two blocks of text line by line and highlight every addition, removal, and change.

▥ Text Diff Checker

Compare two blocks of text line by line and highlight what was added or removed.

▥ Text Repeater

Repeat any word, line or block of text as many times as you need, with your chosen separator.

◐ Text Similarity Checker

Compare two texts for word and phrase overlap to spot duplicate or near-duplicate content.

◓ Text Sorter

Sort lines alphabetically, numerically, by length, or randomly, with reverse and unique options.

◧ Text to ASCII Converter

Convert text into ASCII or Unicode code points, and turn code points back into readable text.

▥ Text to Binary Converter

Convert text to binary, and binary back to text, with UTF-8 support and spaced byte output.

▦ Text to PDF

Turn plain text or Markdown-style notes into a clean, printable PDF with proper margins, page breaks and font size. Free online.

◓ Tile Calculator

Calculate how many floor or wall tiles you need, including a cutting waste allowance.

◔ Time Card Calculator

Add up worked hours from clock-in and clock-out times, minus breaks, with weekly pay.

◑ Time Duration Calculator

Work out the exact duration between two times, in hours, minutes, and decimal hours.

◔ Time Zone Converter

Convert a time between any two UTC offsets, including day rollovers.

◧ Tip Calculator

Work out the tip, total bill, and per-person split for any restaurant or service bill.

◨ Tip Split Calculator

Split a restaurant bill with tip between any number of people, with optional rounding up.

◨ Title Case Converter

Convert headlines to AP, Chicago, every-word or sentence case with correct small words.

▥ Torque Converter

Convert torque between newton metres, pound-feet, pound-inches and kilogram-metres.

▦ Triangle Calculator

Find the area, perimeter, and height of a triangle from three sides or from a base and height.

◩ URL Encoder / Decoder

Percent-encode or decode URLs and query string values, component-safe or whole-URL.

◓ URL Parser

Break any URL into protocol, host, path, query parameters and fragment.

◧ URL Slug Generator

Turn any title into a clean, SEO-friendly URL slug with accents stripped and words hyphenated.

▣ UTM Link Builder

Build clean, consistent UTM tracking links for campaigns in Google Analytics.

◧ UUID Generator

Generate cryptographically random UUID v4 identifiers in bulk, ready to copy or download.

◐ Unit Converter

Length, mass, volume, area, speed, time, and temperature units.

◐ Unit Price Calculator

Compare two package sizes by price per unit to find the genuinely cheaper option.

◈ Unix Timestamp Converter

Convert Unix epoch timestamps to human-readable dates and back, in local time and UTC.

▦ Unlock PDF

Remove printing, copying and editing restrictions from a PDF you own. Runs entirely in your browser — nothing is uploaded.

◔ User Agent Parser

Identify the browser, engine, operating system and device type behind any user agent string.

◪ Username Generator

Create memorable, available-looking usernames for gaming, social media and new accounts.

◧ VAT Calculator

Add or remove VAT at any rate to find the net amount, the tax, and the gross total.

◫ VO2 Max Calculator

Estimate aerobic fitness from your age and resting heart rate — no treadmill test needed.

◩ Volume Calculator

Find the volume of a box, cylinder, sphere, cone, or pyramid from simple measurements.

◪ Waist to Hip Ratio Calculator

Measure body fat distribution and cardiovascular risk with the WHO waist-to-hip ratio.

▦ Water Intake Calculator

Find how much water to drink per day based on your weight, activity, and climate.

◔ Week Number Calculator

Find the ISO week number for any date, plus the day of the year and the quarter.

◨ Weight Converter

Convert kilograms, pounds, grams, ounces, stones and tonnes with exact conversion factors.

◒ Word Counter

Live word, character, sentence, and reading-time counts.

◧ Word Frequency Counter

Count how often each word appears in your text and rank them, with stop words optionally excluded.

◧ XML Formatter

Pretty-print XML with proper indentation, or minify it, and catch malformed markup instantly.