Every tool
you actually need.
Free tools for developers and everyone.
Developer Tools
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JSON Formatter
Format, validate and prettify JSON
Base64 Encoder/Decoder
Encode or decode Base64 strings
URL Encoder/Decoder
Encode or decode URLs and query strings
Password Generator
Generate strong random passwords
UUID Generator
Generate v4 UUIDs instantly
Timestamp Converter
Convert Unix timestamps to human dates
Word Counter
Count words, characters and lines
Color Converter
Convert between HEX, RGB and HSL
Lorem Ipsum Generator
Generate placeholder text instantly
Markdown Preview
Preview Markdown as rendered HTML
Regex Tester
Test and debug regular expressions live
HTML Encoder/Decoder
Encode or decode HTML entities
JWT Decoder
Decode and inspect JSON Web Tokens
SHA Checksum
Calculate SHA-1, SHA-256, SHA-384 and SHA-512 checksums
JS / CSS Minifier
Minify JavaScript and CSS entirely in your browser
Cron Expression Builder
Build cron expressions visually with human-readable preview
Case Converter
Convert text between UPPER, lower, Title, camelCase, snake_case and more
JSON ↔ CSV Converter
Convert between JSON and CSV formats instantly
XML Formatter
Format, validate and prettify XML instantly
Number Base Converter
Convert between binary, octal, decimal, hex and any base
QR Code Generator
Generate QR codes from text, URLs and more
Text Diff / Compare
Compare two texts and see differences highlighted
YAML ↔ JSON Converter
Convert between YAML and JSON formats instantly
SQL Formatter
Format and beautify SQL queries with proper indentation
HTML ↔ Markdown Converter
Convert between HTML and Markdown instantly
Code Screenshot
Create beautiful code screenshots for social media
Designer Tools
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Color Palette Generator
Generate harmonious color palettes
Gradient Generator
Build CSS gradients with live preview
Contrast Checker
WCAG AA/AAA accessibility contrast checker
Color Blindness Simulator
Simulate color vision deficiencies
Tints & Shades
Generate lighter and darker color variants
Type Scale Generator
Modular typography scale with CSS output
Line Height Calculator
Optimal line height and letter spacing
Font Pairing
Google Fonts pairing suggestions
Aspect Ratio Calculator
Calculate dimensions for any aspect ratio
Spacing Scale Generator
Generate consistent spacing systems
Box Shadow Generator
Visual CSS box-shadow builder
SVG Viewer & Optimizer
Preview and minify SVG code
Favicon Generator
Generate favicons from text or emoji
Image Color Extractor
Extract color palette from any image
Placeholder Image
Generate placeholder images at any size
CSS Clip-path Generator
Visual clip-path polygon builder
CSS Animation Generator
Keyframe animation builder
CSS Flexbox Generator
Build CSS Flexbox layouts visually with live preview
CSS Grid Generator
Build CSS Grid layouts visually with live preview
CSS Border Radius
Visual CSS border-radius generator with presets
Glassmorphism Generator
Create frosted-glass UI effects with backdrop-filter
CSS Text Shadow
Visual CSS text-shadow builder with multiple layers
CSS Loader Generator
Generate pure CSS loading spinners and animations
SVG Blob Generator
Generate random organic SVG blob shapes
Calculators
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Compound Interest
Calculate investment growth over time
Loan Calculator
Monthly payments and total interest on loans
ROI Calculator
Return on investment calculator
Tip Calculator
Split bills and calculate tips
BMI Calculator
Body mass index calculator
Age Calculator
Calculate exact age from birthdate
Percentage Calculator
Percentage, increase, decrease and difference
Discount Calculator
Calculate sale prices and savings
GPA Calculator
Calculate your Grade Point Average
Fuel Cost Calculator
Estimate trip fuel costs
Unit Converter
Convert between length, weight, temperature, speed and more
Date / Time Calculator
Calculate date differences or add/subtract time
Timezone Converter
Convert time between any timezone instantly
Mortgage Calculator
Calculate monthly mortgage payments and total interest
Salary Calculator
Convert salary between hourly, daily, weekly and annual
Electricity Cost Calculator
Estimate electricity usage cost for any appliance
Health & Nutrition
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TDEE Calculator
Macro Calculator
Body Fat Calculator
Calorie Deficit Calculator
Ideal Body Weight Calculator
Water Intake Calculator
Protein Intake Calculator
Heart Rate Zone Calculator
One Rep Max Calculator
Sleep Calculator
BAC Calculator
Pregnancy Due Date Calculator
Pace Calculator
VO2 Max Estimator