About this coin flip
A virtual coin flip settles “heads or tails?” instantly, wherever you are. Click once for a fair, random result with a running heads/tails tally — free, with no sign-up.
This tool is for anyone who needs a quick, fair decision: settling a bet, choosing who goes first, picking teams, or breaking a tie when no coin is handy. You click “Flip the coin” and the tool shows Heads or Tails immediately, while the “Heads: 0 · Tails: 0” tally tracks your session score so you can see the running count. Hit “Reset” any time to zero the counters and start fresh. It also works great for classrooms, game nights, and live streams — anywhere a quick, impartial call keeps things moving.
Everything runs entirely in your browser. Each flip is generated on your device — nothing is sent to a server, stored, or logged. Every flip stays a true 50/50, no matter what came before.
How to use it
- Click "Flip the coin".
- See the result — Heads or Tails — and the running tally "Heads: 0 · Tails: 0" update.
- Click "Reset" to zero the counters and start a fresh session.
The method behind it
Frequently asked questions
Is this coin flip really 50/50?
Yes. Each result comes from a single cryptographic random bit, giving exactly equal probability to heads and tails on every flip. The tool has no memory and no pattern — previous results never affect the next flip, so long-run results converge to 50/50.
Can I use it to settle a bet or make a real decision?
Absolutely — that is what it is for. Because each flip is cryptographically random and unbiased, it is as fair as a physical coin toss, and more convenient: no coin to lose, plus a tally to keep score across many flips.
I got heads five times in a row — is it broken?
No, that is normal randomness. The chance of five heads in a row is 1/32 ≈ 3.1% — rare for any specific run of five, but common over many flips. This is the gambler's fallacy: past flips do not make tails "due". Each flip stays 50/50.
Does the tally get saved anywhere?
No. The heads/tails counters live only in your current browser tab and reset when you click "Reset" or close the page. Nothing is sent to a server or stored, so your flip history stays completely private to you on this device.
Worked example
Flip the coin 4 times. There are 2⁴ = 16 equally likely sequences (HHHH, HHHT, HHTH, …, TTTT), each with probability 1/16 = 6.25%. The chance of all four landing heads is therefore 1/16 = 6.25% — unlikely for any given set of 4 flips, but guaranteed to happen regularly if you keep flipping, which is why short streaks should not surprise you.