Settle a choice or a match toss with a fair coin flip: heads or tails, with a spinning coin, a running score and your longest streak. Flip 10 or 100 coins at once to see probability in action.
loading toolHow to flip a coin online
- Press Flip the coin.
- Watch the coin spin and land on heads or tails.
- Keep flipping to build the score, or press Reset.
Good to know
- Great for teaching probability: flip 100 a few times and compare the results.
Questions
Is it really random?
Yes. It uses your browser’s cryptographic random generator (the same one used for passwords), so every result is equally likely and nobody, including us, can predict or fix it.
Are heads and tails really 50/50?
Yes. Over many flips the score moves closer to half and half, but short runs of 5 or 6 in a row are normal: that is what randomness looks like.
Is my data private?
Yes. Everything happens inside your own browser: nothing you type or choose is uploaded to us or anyone else.
Is it free?
Completely free, with no sign-up, no watermark and no limit on how many times you use it. Light ads keep the site running.
