Free online random number generator. Pick random numbers between any range for giveaways, lotteries, sampling, and decisions. Learn how true randomness works.
Need a random number and can't decide one yourself? Whether you're running a giveaway, picking a winner, doing a class lottery, or just settling an argument about who buys the next round — our free random number generator has you covered. Paste in a range, hit generate, and get an unbiased result in milliseconds.
When You Actually Need a Random Number
Random numbers show up in more places than you'd think:
- Giveaways and contests — assign each entrant a number and let the generator pick the winner. No accusations of favouritism.
- Sampling and surveys — researchers use random selection to build unbiased samples from a population.
- Game design — dice rolls, loot drops, and encounter tables all need a dependable source of randomness.
- Security practice — random numbers are the raw material for password salts, tokens, and verification codes.
- Everyday decisions — flipping a coin with extra steps, picking a random workout, or choosing who presents first.
Random vs. Pseudo-Random: Know the Difference
Here's the part most people get wrong. The Math.random() in JavaScript and most "random" functions in programming languages are pseudo-random number generators (PRNGs). They start from a seed value and apply a deterministic formula, so the sequence looks random but is actually reproducible — given the same seed, you get the same numbers. That's fine for games and casual use.
For anything where predictability matters — lottery draws, security tokens, cryptographic keys — you want true randomness, generated from physical entropy like atmospheric noise or radioactive decay. True random number generators (TRNGs) are unpredictable even in theory. Our tool is built for practical, everyday use: it's fast, unbiased, and gives you exactly the range you ask for.
How to Use the Generator
Using the tool takes seconds:
- Enter your minimum and maximum values (negative numbers and large ranges work fine).
- Choose how many numbers you need — one winner or a whole list.
- Toggle no repeats when you want unique numbers, like assigning random seats.
- Hit generate and copy the result.
Three Tips for Fair Draws
First, always use a fixed, equal range for every entrant — a 1–10 draw gives everyone the same odds, while 1–100 with 20 missing numbers doesn't. Second, if you're running a serious competition, generate the number after entries close and screenshot it for transparency. Third, remember that with truly random draws, streaks happen — the same number appearing twice in a row is not a bug, it's just randomness being random.
Ready to test your luck? Open the random number generator and pick a number — your next winner, sample, or decision is one click away.