Our growing collection of free, client-side developer tools. No login, no tracking, no limits.
Generate UUID v1, v4, v5 and ULID identifiers. Bulk generation, namespace hashing, and UUID analysis tools.
Check how strong your password is. Entropy calculation, crack-time estimates, and password generation — client-side only.
Decode Base64 strings instantly. Supports standard and URL-safe Base64, binary output, and batch decoding.
Encode text or files to Base64. Standard, URL-safe, and MIME encoding. File upload to Base64 supported.
URL encode and decode strings. Handles percent-encoding, query string parsing, and full URL component analysis.
Count words, characters, sentences, and paragraphs. Reading time estimation and keyword density analysis.
Calculate square footage of rooms, floors, and irregular shapes. Useful for flooring, painting, landscaping, and real estate.
Quick percentage calculator. Compute what-percent-of-X, percent increase/decrease, tip amounts, discounts and tax in one place.
Calculate exact age in years, months, days, hours and minutes from any birthdate. Date difference and countdown to next birthday.