How to flip a coin online
- Tap the coin or press Flip the coin. On a keyboard, the Space bar works too.
- Read the result. The coin spins and lands on heads or tails, and the result is announced for screen readers.
- Want more? Pick up to 6 coins, or rename the two sides to anything you like, such as "Netflix" and "Bed".
Your totals, percentages and best streak build up as you go, so you can watch the split settle towards 50/50 over hundreds of flips.
Is this coin toss fair?
Every flip is decided before the animation starts, using crypto.getRandomValues, the cryptographically secure generator built into every modern browser. We discard the tiny slice of values that would tilt the odds, so heads and tails are exactly equally likely. The spin you see just shows the result; it does not affect it.
Previous flips do not matter. After five tails in a row, heads is still exactly 50%. Believing otherwise is called the gambler's fallacy, and our coin flip odds guide explains why streaks feel so suspicious.
When to use a coin flip
A coin toss is the quickest fair way to settle a choice between two options when neither person wants to give way:
- Sports and games: who kicks off, who serves first, who picks sides.
- Everyday decisions: where to eat, which film to watch, who does the dishes.
- Classrooms: picking who goes first, or running a quick probability experiment with a whole class.
- Breaking ties: when a vote or a score ends level.
There is also a trick for decisions you are stuck on: flip the coin, and notice how you feel about the result. If you are disappointed, you already knew what you wanted.
Flip multiple coins
Choose 2 to 6 coins to flip them all at once. It is handy for games that need several coin results, or for teaching how outcomes spread out. With 3 coins, for example, there are 8 equally likely combinations, and getting all three the same happens 1 time in 4.
More free coin flip and decision tools
Frequently asked questions
Is this online coin flip really 50/50?
Yes. Each flip uses your browser's cryptographic random number generator (crypto.getRandomValues), the same source used for security keys, with rejection sampling so neither side is favoured. Every flip is independent of the last one.
Can I flip more than one coin at a time?
Yes. Choose 1 to 6 coins under the coin. Each coin is decided separately and the result shows how many landed on each side.
Can I change what the coin says?
Yes. Type your own labels for each side, for example Pizza and Tacos, or a friend's name on each side. Your labels are saved in your browser for next time.
Why did I get the same side five times in a row?
Streaks are normal in random results. In 50 flips there is roughly a 55% chance of seeing at least 6 heads or 6 tails in a row somewhere. Our coin flip odds page lets you calculate any streak.
Does a real coin land 50/50?
Very nearly. A large 2023 study of over 350,000 hand-tossed flips found a slight tendency for a coin to land on the same side it started on, around 50.8%. A digital flip has no starting side, so it avoids that bias.
Is my data stored anywhere?
Your stats and labels are saved only in your own browser's local storage. Nothing about your flips is sent to our server.