The Coin Flip tool tosses a virtual coin for a fair heads-or-tails result. Tap the coin to flip it, watch it spin, and see whether it lands on heads or tails — perfect for settling a decision, picking who goes first, or breaking a tie when no real coin is handy.
Every flip is a genuine 50/50: the result comes from your browser’s cryptographically secure random generator, so it can’t be predicted or rigged. It also keeps a running tally of heads and tails, your current and longest streaks, and a history of recent flips — and you can flip 10 or 100 times at once.
How to flip a coin
- Tap the coin or press the Flip button to toss it once.
- Read the result — Heads or Tails — as the coin lands.
- Use “Flip ×10” or “Flip ×100” to run many flips at once and watch the odds even out.
- Check the stats for the heads/tails split, your streaks, and recent history; press Reset to start over.
Is the coin flip really fair?
Yes. Each flip uses the Web Crypto API (crypto.getRandomValues), the same secure randomness browsers use for encryption, and maps it to heads or tails with exactly even odds. There’s no bias and no way to predict the next result.
Over a small number of flips you’ll often see lopsided runs — that’s normal randomness, not a flaw. Flip ×100 a few times and you’ll watch the split settle close to 50/50, exactly as probability predicts.
When a coin flip helps
- Settling a decision or a friendly bet with no real coin nearby.
- Choosing who goes first in a game or who kicks off.
- Breaking a tie fairly between two options.
- Teaching probability — the bulk-flip stats show the law of large numbers in action.
Frequently Asked Questions
Are the odds exactly 50/50?
Yes. Heads and tails each have an exact 50% chance on every flip, drawn from your browser’s cryptographically secure random generator. Past flips never affect future ones — a coin has no memory.
Why did I get five heads in a row?
That’s ordinary randomness. Streaks are expected over many flips, and each individual flip is still 50/50. The “longest streak” stat is there to show just how common runs really are.
What do the ×10 and ×100 buttons do?
They flip the coin that many times instantly and add all the results to your stats. It’s a quick way to see the heads/tails split converge toward 50/50 over many flips.
Does it save my results?
No. The tally and history live only in the page while it’s open and reset when you reload or press Reset. Nothing is uploaded or stored.
Is the coin flip free?
Yes, completely free and with no sign-up. It runs entirely in your browser and works on desktop and mobile.