Random & Security
Random & Security
Generate strong passwords, random numbers, lottery picks, dice rolls and coin flips — plus check password strength and validate card numbers with the Luhn algorithm. Cryptographically secure randomness where it matters.
Password Generator
Cryptographically strong passwords, built in your browser.
Password Strength Checker
Test password strength, entropy and real-world crack times.
Random Number Generator
Random integers in any range — with or without repeats.
Dice Roller
Roll up to 20 dice — d4, d6, d8, d10, d12, d20 or custom.
Coin Flip
Flip one or many coins — instant heads or tails.
Random Picker
Pick random winners from a list of names or entries.
Lottery Number Generator
Quick-pick lottery numbers for popular games worldwide.
Credit Card Validator
Check card numbers with the Luhn algorithm — offline.
These 8 Random & Security tools are part of a complete set of 99 free utilities. Browse all tools →