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Random Number, Dice, Coin & Teams
Fair random numbers, dice rolls, coin flips and team picks.
Free tools that run in your browser. Nothing you type, open or create is uploaded to NerdBible or anyone else.
Every result comes from your browser's cryptographic random number generator, with rejection sampling so no number is even slightly more likely than another. Nothing is sent anywhere.
How to use it
- Pick a tab: Number, Dice, Coin or Teams.
- Set the range, the dice, the number of coins or the list of names and number of teams.
- Press the button. Press it again for a fresh result; dice and coins keep a running record.
Questions
Is it truly random?
It uses the same cryptographic generator browsers use for security, and rejection sampling to keep every outcome equally likely. That is far more even than a typical simple random function.
What does No repeats do?
Each number can come up only once, like drawing raffle tickets from a hat. You cannot ask for more numbers than the range holds.
How are teams made fair?
The names are shuffled, then dealt out one at a time like cards, so team sizes never differ by more than one.