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Coin Flip

Flip a fair coin. Or many at once.

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About

Click flip and a coin spins to heads or tails. Set 'flip count' higher to flip many at once and see the distribution. Uses crypto-grade randomness, not Math.random.

How to use

  1. Click flip.
  2. Optionally set how many to flip at once.
  3. Watch heads vs tails.

FAQ

Is it really 50/50?+

Yes. Each flip uses crypto.getRandomValues, which is uniform. A real physical coin is also famously biased toward landing on the side that started up, but a digital flip has no such quirk.