Coin Flip

No coin to hand? Flip heads or tails online here. Every toss is random and fair — 50% heads, 50% tails — so you can settle a decision quickly and impartially. The counter tracks how often heads and tails have come up.

使い方

The flip uses your browser's random-number generator. Each outcome is independent of the last: even after ten heads, the chance of heads on the next flip is still exactly 50%. There is no "memory" and no pattern.

ステップ解説

1Click "Flip the coin".
2See whether it came up heads or tails.
3Flip again or reset the counter.

活用シーン

Settling a decision between two equal choices.
Deciding who starts in a game or sport.
Explaining probability and randomness to children.

よくある質問

Is the coin flip truly fair?

Yes. Every flip has exactly a 50% chance of heads and 50% of tails, based on your browser's random-number generator.

Do earlier flips affect the next one?

No. Each flip stands on its own. The odds stay 50/50 regardless of what came before.

Can I use it for more than two choices?

A coin gives two outcomes. For more options you can combine flips (e.g. two flips give four possibilities).