Heads or tails in one press. A fair coin toss, exactly 50/50, every single time.
This is a free online coin flipper: no app, no sign-up, and it works the same on a phone or a computer. Press Flip the Coin. The coin goes up, turns over several times and lands on heads or tails, and the result appears underneath in large letters. Press again for the next flip. The tally on the left counts every flip, and the row of small coins on the right shows the most recent ones, newest first.
Two more buttons are there for when one flip is not enough. Flip 10 and Flip 100 add that many flips in a single press and tell you how they split, which is handy for a probability lesson or simply for satisfying your curiosity about whether the coin really is even.
If heads and tails mean something specific, write it down. Type Pizza on the heads side and Burgers on the tails side, and the coin, the result and the tally all use your names. The odds do not change.
Yes, and in a stricter sense than a real coin. Each result is drawn with crypto.getRandomValues, your browser's cryptographically secure random generator, before the animation starts. The coin is then turned so that it lands on the side that was already drawn. There are exactly two outcomes, each with the same chance, and the generator has no memory, so a long run of heads does nothing to the next flip.
Nothing on this page lets anyone tilt the result. There is no hidden setting, no weighting and no server deciding for you; the flip happens on your own device. Our page on how our randomness works explains the method in more detail.
A real coin is not quite as fair as people think. In 2023 a team led by František Bartoš published the results of 350,757 hand-thrown coin tosses, and found that a flipped coin lands on the same side it started on about 50.8% of the time. That is a small edge, but it is real, and it comes from the way a thumb launches the coin.
| Real coin | This coin flip | |
|---|---|---|
| Odds | About 50.8% for the starting side | Exactly 50/50 |
| Can be influenced | By a practised thumb | No |
| Rolls under the sofa | Sometimes | Never |
| Counting many flips | By hand | Tally and longest run counted for you |
| Your own names on the sides | No | Yes |
A real coin still wins on one point: everyone in the room can watch it in the air. If the flip settles something that matters to other people, share your screen or flip where everyone can see the result appear.
The most common complaint about any coin flipper is that it "keeps landing on heads". Long runs feel wrong, but they are exactly what randomness looks like. We worked the numbers out for 100 fair flips:
| A run of the same side, at least | Chance of seeing it in 100 flips |
|---|---|
| 5 in a row | About 97% |
| 6 in a row | About 81% |
| 7 in a row | About 54% |
| 8 in a row | About 31% |
| 10 in a row | About 9% |
So in 100 flips you should expect a run of six or seven somewhere, and it would be stranger not to see one. Press Flip 100 a few times and watch the Longest run box. Believing that tails is "due" after five heads is called the gambler's fallacy, and the coin has never heard of it.
When a single coin toss feels too sudden, agree on a series before the first flip. The first side to win two flips takes a best of three; the first to three takes a best of five. The odds stay even for both sides, only the length changes.
| Format | Shortest | Longest | Average number of flips |
|---|---|---|---|
| Single flip | 1 | 1 | 1 |
| Best of three | 2 | 3 | 2.5 |
| Best of five | 3 | 5 | about 4.1 |
A best of three is over after two flips exactly half the time. Rename the sides to the two players, flip one coin at a time and watch the tally: it counts the series for you.
Which film, which restaurant, who picks the music. When both choices are acceptable, a coin ends the discussion in a second. For three or more options, use the spinning wheel with your own list instead.
Board games, the kick-off in a friendly match, the first speaker in a debate. Agree who calls before the flip, and call before the coin lands, not after.
If someone does not like losing on a single flip, agree on best of three before the first one. Then stick to it. Changing the format after the first result is how arguments start.
Have each student predict how many heads will come up in 100 flips, then press Flip 100 together. The result is almost never exactly 50, which leads straight into a good conversation about what "50/50" actually means. The classroom guide has more ideas for using random tools with a class.
Flip for a decision you are stuck on and notice your reaction when the result appears. A flash of relief or disappointment tells you which way you were leaning. You do not have to obey the coin.
Yes. Flip 10 and Flip 100 each add a batch of independent flips to the tally, and the coin shows the last one.
Only while the page is open. Nothing is sent to our servers, and the tally is cleared when you close the page or press Reset tally.
Two or three. It ends after two flips half the time, so the average is two and a half. A best of five takes three to five flips, about four on average.
Type Yes and No as the names of the two sides, or try the yes or no wheel, which can add a Maybe and keeps your question above the answer.
For two entrants, yes. For more, the instant draw or the giveaway wheel are built for it and keep a record of the result.