Handitab

Coin Flip

Flip a virtual coin once for heads or tails, or up to 100,000 times to see the counts, percentages, and the first 50 results.

About Coin Flip

A coin flip is a random choice between two equally likely outcomes, heads or tails. Each flip here draws a random number from the cryptographic generator of your browser (crypto.getRandomValues) and uses it to choose a side. You can flip once or run up to 100,000 flips, which returns the count and percentage of each side plus the first 50 results. Earlier flips are not stored.

Also known as: Flip a Coin, Heads or Tails, Coin Flipper, Coin Flip Simulator.

How to use Coin Flip

  1. Fill in "Number of flips".
  2. The result appears below. Press "Flip again" for a new one.
  3. Copy the result with the copy button, or download it as a file where that is offered.

Questions about Coin Flip

Is the virtual coin flip really 50/50?

Yes. Each flip takes a 32 bit random value from the cryptographic random generator of the browser and checks whether it is odd or even, so heads and tails are equally likely and no flip depends on the one before.

Why did I not get exactly half heads?

Random results vary around the expected share. Ten flips often give 7 to 3, and that is normal. The percentages move closer to 50% as the number of flips grows, which you can see by running 100,000 flips.

Runs in your browser. Page last updated .

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