Free Dev Toolbox
Free Dev Toolbox is a collection of free developer utilities that run entirely in your browser. Generate UUIDs, hash text with SHA-256 or MD5, create strong random passwords, convert Unix timestamps, count words, encode Base64 or URLs, convert text case, and generate lorem ipsum, slugs or random numbers. No signup, no install, and nothing you type is ever uploaded to a server.
UUID v4 Generator
Generate random UUID v4 strings in bulk.
Hash Generator
SHA-256 / MD5 hash of any text.
Password Generator
Strong random passwords with options.
Unix Timestamp Converter
Convert between Unix time and dates.
Word Counter
Count words, characters, lines and sentences.
Base64 Encoder / Decoder
Encode text to Base64 and decode it back.
URL Encoder / Decoder
Percent-encode text for safe URLs.
Case Converter
UPPERCASE, camelCase, snake_case and more.
Lorem Ipsum Generator
Placeholder text for mockups and layouts.
Age Calculator
Exact age in years, months and days.
URL Slug Generator
Clean, SEO-friendly slugs from any title.
Random Number Generator
Pick random numbers in any range.
Hex Encoder
Convert text to hexadecimal and back.
Remove Duplicate Lines
Delete repeated lines from any list.
Days Between Dates
Count days, weeks and weekdays between two dates.
Text to Binary
Convert text to 8-bit binary and back.