General Calculators
Everyday calculators for common tasks. Calculate dates, ages, time differences, and more with simple, intuitive tools.
Showing 15 of 15 calculators
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text instantly. Compare hash values, copy r...
Regex Tester
Test and debug regular expressions with live match highlighting, capture groups, flags support, a...
Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 to readable text instantly. Supports standard and URL-safe...
Case Converter
Convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_cas...
Cron Expression Parser
Parse and translate cron expressions to human-readable text instantly. See next run times, valida...
Date Calculator
Calculate days between two dates, add or subtract days from a date, find business days excluding ...
Word Counter
Count words, characters, sentences, paragraphs, and estimate reading time instantly. Live updates...
JWT Decoder
Decode and inspect JWT tokens instantly. View header, payload, claims, expiration time, and issue...
Age Calculator
Calculate your exact age in years, months, and days from your date of birth. Find out how old you...
Password Strength Calculator
Check how strong your password is with our free password strength calculator. See entropy bits, e...
JSON Formatter
Format, validate, and minify JSON online. Pretty print with customizable indentation, syntax high...
Time Zone Converter
Convert time between different time zones instantly. Compare multiple cities, plan international ...
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and dates to Unix timestamps instantly. Shows cur...
URL Encoder/Decoder
Encode or decode URLs, query strings, and special characters instantly. Supports percent encoding...
AI Token Calculator
Calculate AI token count, cost, and usage for OpenAI GPT-4o, Claude, Gemini, and other LLMs. Conv...