48 free tools
Online Tools
Calculators, converters, and developer utilities designed to make your life easier.
Text Tools
6 toolsWord & Character Counter
Count words, characters, sentences, and paragraphs in real-time.
Markdown Previewer
Preview Markdown with live HTML rendering.
Case Converter
Convert text between uppercase, lowercase, title case, and more.
Text Diff Viewer
Compare two blocks of text and visualize line-by-line differences.
Remove Duplicates & Sort Lines
Remove duplicate lines, trim whitespace, and sort lines in bulk.
Password Generator
Generate strong, secure passwords with custom settings.
Developer Tools
8 toolsJSON Formatter
Prettify and validate your JSON data.
JSON / YAML Converter
Convert JSON to YAML and YAML to JSON with formatting.
JSON to PHP Array
Convert JSON into PHP short array syntax.
JWT Decoder
Decode JWT headers and payloads without verifying signatures.
Base64 Converter
Encode text to Base64 or decode Base64 strings.
CSS Box Shadow Generator
Visually create CSS box-shadows and copy the code.
Color Contrast Checker
Check color contrast ratios against WCAG accessibility standards.
Slug Generator
Clean strings into URL-friendly slugs.
Math Tools
1 toolsConverters
9 toolsLength Converter
Convert between various units of length like meters, feet, inches, and miles.
Weight Converter
Convert between weight units such as kilograms, pounds, ounces, and grams.
Temperature Converter
Convert temperatures between Celsius, Fahrenheit, and Kelvin.
Area Converter
Convert between sq ft, sq meters, acres, hectares, sq yards, and more.
Cooking Converter
Convert cooking measurements (volume vs weight) based on ingredients.
Data Storage Converter
Convert between Bits, Bytes, KB, MB, GB, TB, PB.
Speed Converter
Convert speed between MPH, KPH, Knots, Mach, and more.
Volume Converter
Convert between liters, gallons, cups, tablespoons, and more.
Hex, RGB & HSL Converter
Convert colors between Hex, RGB, and HSL formats.
Generators
3 toolsFinancial Tools
8 toolsLoan Calculator
Calculate monthly payments, total interest, and amortization for loans and mortgages.
Compound Interest Calculator
Visualize how your investments grow over time with compound interest.
Inflation Calculator
Calculate the value of money over time using US CPI data.
Salary Converter
Convert salary between hourly, daily, weekly, monthly, and yearly rates.
Tip Calculator
Calculate tips and split bills easily.
Discount Calculator
Calculate discount amounts, savings, and final prices from percentage discounts.
Sales Tax Calculator
Calculate sales tax and final price, including reverse calculation for prices that include tax.
ROI Calculator
Calculate return on investment with profit/loss metrics and annualized returns.
Health & Lifestyle
3 toolsCooking & Baking
5 toolsRecipe Scaler
Scale recipes up or down by adjusting serving sizes with fraction conversion.
Oven Temperature Converter
Convert between Celsius, Fahrenheit, and Gas Mark for oven temperatures.
Baking Pan Converter
Convert recipes between different pan sizes and calculate scaling factors.
Baker's Percentage Calculator
Calculate hydration and ingredient ratios for bread making using baker's percentages.
Rice Water Ratio Calculator
Calculate perfect water-to-rice ratios for different rice types.
Date & Time
5 toolsDate Difference
Calculate the duration between two dates.
Age Calculator
Calculate exact age in years, months, and days.
Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa.
Time Zone Converter
Convert time between different time zones.
Pomodoro Timer
Run focused pomodoro sessions with breaks and cycle tracking.