True, fair randomness
Random numbers come in handy all the time: drawing a winning number, assigning numbers to participants, picking random quiz questions, board games and decisions. This tool combines three in one — a number generator, virtual dice and a coin flip — all powered by your browser's cryptographically secure random generator.
Random number generator
- Set the minimum and maximum, such as 1 and 100.
- Choose how many numbers you need — up to 1,000 at once.
- Tick “No repeats” for distinct numbers, e.g. when drawing several winners.
- Click “Generate” and copy the result.
Rolling dice
Roll one to six six-sided dice and see the total — great for board games like Ludo or Snakes and Ladders when real dice go missing. Each face has exactly a 1 in 6 chance.
Flipping a coin
When two people can't decide, a coin flip is still the quickest fair way to settle it. Click “Flip the coin” for heads or tails at 50/50 odds, and the tool keeps a tally.
Why our generator is better
Many sites use Math.random, which produces pseudo-random numbers that can be predictable. We use crypto.getRandomValues with rejection sampling to avoid statistical bias, so every number in the range has exactly equal odds.
To pick a random name from a list in a fun way, try Spin the Wheel.
True vs pseudo-randomness
Computers are logical machines, so most “random numbers” come from mathematical algorithms called pseudo-random generators. Some are simple and fast — fine for games — but their output can be predictable. Cryptographically secure generators, like the one we use, draw on randomness from the operating system, making them suitable for draws, raffles and even passwords.
Fun facts about probability
- Flip a coin 10 times and the chance of exactly 5 heads and 5 tails is only about 25%.
- Rolling the same die face 3 times in a row doesn't make it “less likely” on the fourth roll — each roll is independent. Believing otherwise is the “gambler's fallacy”.
- In a group of just 23 people, the chance that two share a birthday is over 50%.
To pick names instead of numbers, use Spin the Wheel; to create secret codes, use the Password Generator.
Frequently Asked Questions
Are the numbers truly random?
Yes. We use an unbiased cryptographically secure generator, so every number has the same chance.
How do I draw several winning numbers without repeats?
Enter how many you need and tick “No repeats”.
Can I generate negative numbers?
Yes — set bounds like −50 to 50.
Are the virtual dice fair?
Yes. Each face has exactly a 1 in 6 chance, like a perfectly balanced die.
Are results stored?
No. Everything happens in your browser and nothing is saved.
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