Flip a virtual coin: heads or tails, 50/50. Press the button or hit Space. Every flip uses a secure random source in your browser.
Recent results (newest first):
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Each flip draws one random bit from crypto.getRandomValues, so heads and tails are exactly as likely as on an ideal coin, and one flip never influences the next. Nothing is sent to a server. If you flip several coins at once, the page counts heads and tails and finds the longest run of the same side.
Agree what heads and tails mean before you flip, then accept the result. For more than two options use the spinning wheel or the random name picker; for numbers see the dice roller or the random number generator.
Long runs are normal in fair sequences. After n flips the chance of a specific sequence of heads is 1 in 2n: 1 in 8 for three, 1 in 32 for five, 1 in 1,024 for ten. Try flipping 1000 coins and look at the longest streak: it is usually somewhere between 7 and 12.
Yes. Each flip uses your browser's cryptographic random generator, so heads and tails are equally likely (50% each) and no flip depends on the previous ones.
Streaks are normal in random sequences. The chance of five heads in a row is 1 in 32 (about 3.1%), and in a long series of flips such runs are expected. The coin has no memory, so the next flip is still 50/50.
Yes. Decide beforehand which outcome means which choice, then flip once. Many people notice a flicker of disappointment at the result, which tells them what they actually wanted.
For a real coin it is very small, roughly 1 in 6000 for a US nickel in one often-quoted physics estimate. This virtual coin only ever lands on heads or tails.
Choose a number of flips from 1 to 1000 and press Flip. You get the total heads and tails, the percentages and the longest streak of the same side.
See also: coin flip wheel · yes or no wheel · dice roller · random number generator · lottery number generator