Developer Tools calculators
Generators every builder reaches for.
A short list of generators that developers (and anyone else) reach for often enough to be worth having instantly available — passwords, unique identifiers, random numbers, and a live word/character count.
Everything here runs entirely in your browser: nothing you generate or type is sent anywhere, which matters more for this category than most, since a password or UUID generator that phoned home would defeat the point.
Password Generator
Free Password Generator to create strong, secure, and random passwords with customizable length, symbols, numbers, and character options.
UUID Generator
Free UUID Generator to generate RFC 4122 version 4 (UUIDv4) identifiers instantly. Create one or multiple unique UUIDs online.
Random Number Generator
Free Random Number Generator to generate random integers within any range, with optional no-repeat mode and customizable settings.
Word & Character Counter
Free Word and Character Counter with live word count, character count, sentence count, paragraph count, and estimated reading time.
How to choose the right calculator
- A strong random password with custom length and character sets → Password Generator
- An RFC-compliant UUID for a database record or session → UUID Generator
- A random number within a range → Random Number Generator
- Live word count, character count, or reading time for a piece of text → Word & Character Counter
Frequently asked questions
No — every generator in this category runs client-side in your browser. Nothing you generate is transmitted or logged anywhere.
Yes — both Password Generator and UUID Generator support generating multiple values in one go; check the options on each calculator's page.