Random generatorsfor real decisions
Try a random number
Ready when you are
Generated in your browser
Open the full generator →A clean, powerful collection of random tools — numbers, coins, dice, lists, and more. Fast, private, and built for everyday use.
Full Suite
Every tool, one place
From colors to cards, each generator is built with care — fast, accessible, and ready to use.
Numbers, coins, dice, yes/no calls, and lotteries.
Colors, passwords, letters, cards, and other helpers.
List pickers, wheel spins, and team randomizers.
Guides and ideas
Randomify BlogCoin Flip Probability: A 10-Coin Classroom Experiment
Run a coin toss experiment with 10 or 100 flips. Compare heads and tails, calculate exact probabilities, and explain why a fair coin need not split evenly.
How Long Should a Password Be? Random Password Strength Explained
How password length and character sets translate into entropy bits, an exact strength table for 8 to 20 characters, and what current NIST guidance says about length, complexity rules, and password managers.
How Random Number Generators Work, and How to Tell If One Is Fair
Pseudo-random vs cryptographic vs hardware randomness, the modulo bias that makes some generators unfair, how a fair shuffle works, and why real random results contain streaks.
Built For Everyone
Whatever you need randomness for
Teachers
Fair picks, every time
Shuffle lists, draw names, and project results with confidence.
Gamers
Roll any dice instantly
From d4 to d100 — totals, individual rolls, one tap away.
Developers
Secure strings on demand
Generate passwords, test data, and random values locally.
Ready to leave it to chance?
Get fair, instant results. No sign-up required — just pick a tool and go.