Coin Flip
Free online coin flip: heads or tails at a tap, or flip hundreds of coins at once and see the running tally. Fair, cryptographically random, in-browser.
updated
- ✓ Runs in your browser — nothing uploaded
- ✓ No sign-up
- ✓ Free, no limits
This coin flip settles the decision you can't make: tap once and you get heads or tails, a genuine 50/50 call with nothing weighting the result. It's the online stand-in for the coin you don't have in your pocket, ready whenever a choice needs to come down to chance.
It also flips in bulk. Set the number of coins and it tosses them all at once, showing the heads-versus-tails tally with percentages and the full sequence of results. That turns a toy into something useful for teaching probability: flip 10 coins and the split is often lopsided; flip 500 and it settles close to 50/50 — a hands-on way to see the law of large numbers, and why a run of five heads in a row is normal, not a rigged coin.
Every flip draws from your browser's cryptographic random source, so it is fair in a way a real coin — which can be caught, spun or subtly biased — isn't guaranteed to be. It runs entirely on your device; nothing about your flips is uploaded, and it keeps working offline.
Frequently asked questions
Is the coin flip truly 50/50?
Yes. Each flip uses your browser's cryptographically secure generator, giving heads and tails an equal chance every time. It's arguably fairer than a real coin toss, which physics can bias slightly toward the side facing up at the start.
Why isn't my tally exactly 50/50?
Because randomness is streaky. Over a few flips the split is often uneven; the more you flip, the closer it drifts to 50%. A run of several heads in a row is expected, not a sign the coin is broken.
Can I flip many coins at once?
Yes — enter any number and it flips them all, showing the heads/tails counts, percentages and the sequence. It's a quick way to demonstrate probability or run a batch of yes/no decisions.