How to use the Coin Flip
- Choose how many flips.
- Press Flip the coin.
What does this tool do?
Each flip is an independent 50/50 outcome. Flip many times to see the law of large numbers in action: percentages drift towards 50% as the number of flips grows.
Why use it?
- Quick decisions.
- Settle disputes fairly.
- Probability lessons.
Did you know?
Getting 10 heads in a row has a probability of 1 in 1,024 — rare, but it happens if you flip enough.
Privacy
Everything you type is processed in your browser. Nothing you enter is sent to our servers or stored by us. There's no account to create and nothing to install.
Frequently asked questions
Is it truly random?
Results come from crypto.getRandomValues, your browser's cryptographically secure random generator, with an unbiased method of picking from a range — so every outcome is equally likely.
Last reviewed by the M2Toolkit team.