Coin flip

Heads or tails in one tap, as fair as a real coin.

How to use Coin flip

Result

Your heads and tails add up here as you flip.

Choose how many coins
Flip a single coin, or up to 100 at once for a probability lesson or a quick experiment.
Flip
Press Flip or tap the coin. It spins in the air and lands on heads or tails.
Watch the tally
The tally counts every head and tail, shows the percentages, the current streak and the longest streak so far.

Fair 50/50
Each flip is drawn from your browser’s secure random generator, so heads and tails are exactly equally likely.
Up to 100 coins
Flip many coins at once and see how the share of heads settles towards 50% the more you flip.
Streaks and stats
See the current run and the longest run of heads or tails, which is great for showing how streaks happen by chance.

This one is. Each flip uses crypto.getRandomValues, so heads and tails each have exactly a 50% chance, and no flip depends on the ones before.

1 in 8 (12.5%), because each flip is 1 in 2: ½ × ½ × ½. Five heads in a row is 1 in 32, and ten in a row is 1 in 1,024.

Rarely exactly 50; that happens about 8% of the time. You’ll usually get between 40 and 60 heads, and the share gets closer to 50% the more you flip.

No. Coins have no memory, so the next flip is still 50/50. Believing otherwise is called the gambler’s fallacy.

Very nearly. Studies of real flips found a coin lands slightly more often on the side it started on, about 51%. This online coin has no such bias.

Yes. Assign heads and tails to your two options and flip. For more than two options, try the spin the wheel tool.