Tools
Useful online tools: calculators, converters, generators and other utilities
Date Calculator
Calculate difference between dates, add or subtract days
Percentage Calculator
Quick percentage, markup and discount calculations
File Size Calculator
Convert file sizes: bytes, KB, MB, GB, TB
Color Converter
HEX, RGB, HSL — convert colors between formats
Unix Timestamp
Convert Unix timestamp to readable date and back
Base64 Encoder/Decoder
Encode and decode text or files to/from Base64
URL Encoder/Decoder
Encode and decode URL strings
Hash Generator
MD5, SHA-1, SHA-256 — generate text hashes
Password Generator
Generate a strong random password of desired length
UUID Generator
Generate UUID v4 — unique identifiers
QR Code Generator
Create a QR code from any text or link
IP Lookup
Find your IP address and geolocation information
DNS Lookup
Check DNS records of any domain
JSON Formatter
Convert JSON to a readable format or minify it
Regex Tester
Test regular expressions on text and highlight matches
Cron Parser
Parse cron expressions and explain schedules
Online Spell Checker
Free online spelling checker. Detect mistakes directly in your browser.
Diff Checker
A tool for line-by-line comparison of two texts with highlighting of added, removed, and changed lines.
Unit Converter
Convert length, weight, and temperature units
Text Case Converter
Online tool to convert text to uppercase, lowercase and other cases.