Everyday tools, all in one place
Text, encoding, dates, units and more — all running locally in your browser. Nothing uploaded, nothing charged.
Text tools
Case, dedupe, replace, sort, sets and count
Letter Case Converter
Convert text to UPPERCASE, lowercase, Title Case, Sentence case and more — instantly.
Remove Duplicate Lines
Remove duplicate lines instantly, with options for case, whitespace and empty lines.
Developer tools
JSON, cron, encoding and network debugging
JSON Formatter & Validator
Format, minify and validate JSON, compare two payloads path by path, and escape or unescape JSON strings.
Cron Expression Parser
Parse crontab expressions into a plain-language schedule and the next 5 run times.
Base64 Encoder & Decoder
Encode text to Base64 or decode it back to UTF-8, with an optional URL-safe alphabet. Everything runs locally.
URL Encoder & Decoder
Percent-encode or decode URLs and query values, with component, full-URL and form modes.
HTML Entity Escaper
Escape <, >, & and quotes into HTML entities, or turn entities back into readable text.
JWT Decoder
Decode a JWT header and payload, inspect claims and expiry time. Signatures are not verified.
Unicode Converter
Convert non-ASCII characters such as Chinese and emoji to \u escapes, U+ code points or HTML entities, and back.
Number Base Converter
Convert integers between binary, octal, decimal and hexadecimal, with BigInt precision and 0b/0o/0x prefixes.
Password Generator
Generate strong random passwords locally with adjustable length, character sets and ambiguous-character filtering.
UUID Generator
Generate RFC 4122 UUID v4 values in bulk, with options for count, uppercase and hyphen-free formatting.
Lorem Ipsum Generator
Generate Latin placeholder text with adjustable paragraphs and sentences, as plain text or HTML.
QR Code Generator
Turn a URL, text or any content into a QR code, adjust size and error correction, and download a PNG.
URL Parser
Break a URL into protocol, host, port, path, query parameters and hash, with automatic path decoding.
HTTP Status Codes
Look up common HTTP status codes and what they mean, with filters by number, name or class.
Date & time
Date difference, age, business days, date math and time zones
Timestamp Converter
Convert Unix timestamps to dates and back, in seconds or milliseconds, with local, UTC, ISO and relative output.
Date Difference Calculator
Find the difference between two dates in days, weeks and calendar years, months and days — great for countdowns and project timelines.
Age Calculator
Calculate your exact age and total days from a birth date, plus a countdown to the next birthday.
Business Day Calculator
Count business days between two dates, excluding weekends, with support for custom holidays.
Unit converters
Length, weight, temperature, area, volume and data size
Length Converter
Convert between millimeters, centimeters, meters, kilometers, inches, feet, yards, miles and nautical miles.
Temperature Converter
Convert between Celsius, Fahrenheit and Kelvin with exact formulas and live results.
Area Converter
Convert between square millimeters, square centimeters, square meters, square kilometers, hectares, acres, square feet and square yards.
Color & design
Color formats, palettes, contrast, gradients and shadows
Color Palette Generator
Generate tints, shades, complementary, analogous and triadic palettes from one base color.
Contrast Checker
Check the contrast ratio between text and background colors and see WCAG AA / AAA results for normal and large text.