All ToolWorld Tools
Every calculator, converter and utility on ToolWorld in one place, organized by category.
Calculators
Age Calculator
Find your exact age in years, months, days, hours and minutes from your date of birth.
Percentage Calculator
Calculate percentages, percentage change, and what percent one number is of another.
Discount Calculator
Work out the final price and amount saved after applying a percentage discount.
BMI Calculator
Calculate your Body Mass Index from height and weight, with metric and imperial units.
BMR Calculator
Estimate your Basal Metabolic Rate — the calories your body burns at rest — using the Mifflin-St Jeor formula.
Loan Calculator
Estimate monthly payments and total interest on a loan from amount, rate and term.
Simple Interest Calculator
Calculate simple interest and total payable amount from principal, rate and time.
Compound Interest Calculator
See how your investment grows over time with compound interest, including yearly breakdown.
Tip Calculator
Work out the tip amount and per-person split for any bill in seconds.
Time Calculator
Add or subtract hours, minutes and seconds to calculate a resulting duration.
Date Difference Calculator
Find the exact number of days, weeks, months and years between two dates.
Average Calculator
Calculate the mean, median, mode and range of a list of numbers instantly.
Ratio Calculator
Simplify ratios or scale them up to find equivalent ratios and missing values.
Fraction Calculator
Add, subtract, multiply and divide fractions with automatic simplification.
GPA Calculator
Calculate your grade point average from course grades and credit hours.
Salary Calculator
Convert between hourly, daily, weekly, monthly and annual pay figures.
Text Tools
Word Counter
Count words, characters, sentences and paragraphs as you type or paste text.
Character Counter
Count characters with and without spaces — handy for bios, tweets and meta descriptions.
Sentence Counter
Count sentences and get average words-per-sentence to gauge readability.
Case Converter
Convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase and snake_case.
Remove Duplicate Lines
Delete repeated lines from a block of text while preserving original order.
Remove Extra Spaces
Strip double spaces, tabs and trailing whitespace from your text in one click.
Text Sorter
Sort lines alphabetically, by length or numerically, ascending or descending.
Text Reverser
Reverse text character by character, word by word, or line by line.
Find and Replace
Find and replace words or patterns in text, with optional case sensitivity and regex.
Text Cleaner
Strip HTML tags, punctuation, numbers or line breaks to clean up messy pasted text.
Line Counter
Count the number of lines, including and excluding blank lines, in any text.
Reading Time Calculator
Estimate how long an article or blog post will take to read based on word count.
Palindrome Checker
Check whether a word, phrase or number reads the same forwards and backwards.
Word Frequency Counter
See which words appear most often in a block of text, ranked by frequency.
Morse Code Translator
Translate text to Morse code and back, with audio playback of the signal.
Developer Tools
JSON Formatter
Format, validate and beautify JSON with clear syntax highlighting and error messages.
JSON Minifier
Compress JSON by removing whitespace and line breaks to reduce payload size.
HTML Formatter
Beautify minified or messy HTML with consistent indentation for easy reading.
HTML Minifier
Minify HTML by stripping comments, whitespace and line breaks for faster page loads.
CSS Beautifier
Format minified CSS into a clean, indented, easy-to-read stylesheet.
CSS Minifier
Minify CSS by removing comments and whitespace to shrink file size.
JavaScript Beautifier
Format minified JavaScript into readable, indented code.
JavaScript Minifier
Minify JavaScript by stripping comments and unnecessary whitespace.
URL Encoder / Decoder
Encode text for safe use in URLs, or decode percent-encoded URLs back to plain text.
Base64 Encoder / Decoder
Encode text or files to Base64, or decode Base64 back to its original form.
UUID Generator
Generate random UUID v4 identifiers, one at a time or in bulk.
Timestamp Converter
Convert between Unix timestamps and human-readable dates in any time zone.
HTML Entity Encoder / Decoder
Encode special characters into HTML entities or decode entities back to text.
JWT Decoder
Decode a JSON Web Token's header and payload to inspect its contents locally.
Regex Tester
Test regular expressions against sample text with live match highlighting.
Image Tools
Image Resizer
Resize images to exact dimensions or by percentage, right in your browser.
Image Compressor
Reduce image file size while controlling quality, without uploading files anywhere.
Image Cropper
Crop images to a custom area or common aspect ratios like 1:1 and 16:9.
Image Rotator
Rotate images by 90°, 180°, 270° or a custom angle, and flip horizontally or vertically.
Image Format Converter
Convert images between JPG, PNG and WebP formats locally in your browser.
Image to Base64 Converter
Convert an image to a Base64 data URL, or turn a Base64 string back into an image.
Image Color Picker
Upload an image and click anywhere to pick its exact HEX and RGB color value.
Favicon Generator
Turn any square image into favicon PNG files in the standard sizes browsers need.
Placeholder Image Generator
Generate placeholder images with a custom size, background color and label text.
Image Grayscale Converter
Convert a color photo to grayscale or black and white directly in your browser.
PDF & Document Tools
PDF Page Counter
Upload a PDF to instantly see how many pages it contains, with no upload to a server.
Text to PDF
Convert plain text into a downloadable PDF document with basic formatting options.
PDF to Text
Extract readable text from simple, uncompressed PDF files directly in your browser.
Markdown to HTML
Convert Markdown syntax into clean HTML markup you can copy or download.
HTML to PDF
Preview HTML content in a print-ready layout and save it as a PDF using your browser.
Text Diff Checker
Compare two blocks of text and instantly see what was added, removed or changed.
Document Word Counter
Upload a .txt file to get its full word, character and paragraph count.
File Size Converter
Convert file sizes between bytes, KB, MB, GB and TB accurately.
CSV to JSON
Convert CSV data into formatted JSON, with an instant table preview.
Text File Merger
Combine multiple text files into one, in the order you choose.
Time & Date Tools
Countdown Timer
Set a countdown to any future date and time, with a live running display.
Stopwatch
A simple browser stopwatch with lap tracking, accurate to the millisecond.
World Clock
See the current time in multiple cities and time zones at a glance.
Leap Year Checker
Check instantly whether any year is a leap year, and see the next ones coming up.
Date Calculator
Add or subtract days, weeks, months or years from a date and see the day of the week.
Business Days Calculator
Count working days between two dates, automatically excluding weekends.
Time Zone Converter
Convert a specific time from one time zone to another for scheduling across regions.
Time Unit Converter
Convert between seconds, minutes, hours, days and weeks.
Time Duration Calculator
Calculate the total duration between a start time and end time, including overnight shifts.
Add Business Days Calculator
Find the resulting date after adding a number of working days to a start date.
Unit Converters
Length Converter
Convert length and distance between meters, feet, inches, miles and more.
Weight Converter
Convert weight and mass between kilograms, pounds, ounces, grams and more.
Temperature Converter
Convert temperature between Celsius, Fahrenheit and Kelvin instantly.
Speed Converter
Convert speed between km/h, mph, m/s and knots.
Area Converter
Convert area between square meters, square feet, acres and hectares.
Volume Converter
Convert volume between liters, gallons, milliliters, cups and more.
Data Storage Converter
Convert digital storage between bits, bytes, KB, MB, GB and TB.
Energy Converter
Convert energy between joules, calories, kilowatt-hours and BTU.
Pressure Converter
Convert pressure between pascals, bar, PSI and atmospheres.
Frequency Converter
Convert frequency between hertz, kilohertz, megahertz and gigahertz.
Power Converter
Convert power between watts, kilowatts and horsepower.
Angle Converter
Convert angles between degrees, radians and gradians.
Generators & Utilities
Password Generator
Generate strong, random passwords using your browser's secure random number generator.
Username Generator
Generate creative, available-style username ideas from your name or keywords.
QR Code Generator
Create a scannable QR code for a link, text or contact details and download it as an image.
Color Converter
Convert colors between HEX, RGB and HSL formats with a live preview.
Color Palette Generator
Generate harmonious color palettes from a base color or completely at random.
Lorem Ipsum Generator
Generate placeholder Lorem Ipsum text by paragraphs, sentences or words.
Barcode Generator
Generate a scannable barcode image from any number or text string.
Sitemap Generator
Generate a valid sitemap.xml file from a list of URLs you paste in.
Random Number Generator
Generate one or more random numbers within a custom range, with optional uniqueness.
Slug Generator
Turn any title or phrase into a clean, URL-friendly slug.
Hash Generator
Generate SHA-256, SHA-384 or SHA-512 hashes from text using your browser's built-in crypto engine.
Random Date Generator
Generate one or more random dates within a custom date range.