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Coin Flip
Flip a virtual coin — heads or tails.
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Can’t decide? Flip a virtual coin for an instant, fair heads-or-tails. Flip several at once to see the split. Press Regenerate to flip again.
Formula / method
each flip is a fair 50/50 draw using the browser crypto RNG
Examples
1 coin
Heads or Tails
Heads or Tails
10 coins
e.g. 6 Heads · 4 Tails
e.g. 6 Heads · 4 Tails
How to use
Enter your values above — the result updates instantly as you type. Everything is computed locally in your browser, so it is fast and private.
Where it's used
- Settling a quick decision between two even options
- Deciding who goes first in a game or who does a chore
- Simulating a sports-style kickoff toss
- Teaching probability and independent 50/50 events
- Flipping many coins at once to see the heads/tails split
Real-world examples
- Flip one coin to decide who pays for coffee
- Flip 10 coins and see a split such as 6 Heads and 4 Tails
- Use a fair toss to pick which team starts
- Flip 100 coins to watch the ratio settle near an even split
Did you know?
A 2023 study of 350,757 real coin flips (Bartoš et al.) found tossed coins land on the same side they started about 50.8% of the time, a tiny wobble-driven bias — this tool uses a true random generator, so it has no such bias.
FAQ
Is the flip fair?
Yes — it uses your browser’s cryptographic random generator, so heads and tails are equally likely and each flip is independent.