Free tool
Random numbers, dice and coin
Draw numbers with a counter effect or lottery balls, roll 3D dice you can lock and flip a real-looking coin or a best-of-3, 5 or 7 series. All with cryptographic randomness.
- Lottery balls
- 3D dice with lock
- Coin and series
- Cryptographic randomness
History
Pick the die or type the notation (for example 2d6+3).
History
Customize both faces and choose a single toss or a series.
Estimates only, not advice. Everything is calculated in your browser: we do not send or store what you type. If you need a record of the draw use the picker.
Quality randomness
Numbers come from crypto.getRandomValues with unbiased sampling, not Math.random. Every value in the range is equally likely, also for the dice and the coin. The animations are just the show: the result is decided beforehand.
What you can do
Draw a number from 1 to 100, make lottery-style combinations with balls, exclude numbers you do not want, export to CSV, roll 2d6+3 or a d20 with advantage and disadvantage, lock dice to reroll only the rest, or decide with a best-of-3, 5 or 7 coin series. For raffles with tickets see the raffle tool.
Frequently asked questions
Can numbers repeat?
By default yes. Turn on “No repeats” for distinct values; if you ask for more than are available (after exclusions), the tool warns you.
How does advantage work with dice?
Each die is rolled twice and the higher (advantage) or lower (disadvantage) is kept. The discarded roll appears in brackets.
Does the coin have memory?
No. Every flip is independent: five heads in a row do not change the next one.
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