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How to use Coin Flip

  1. Click the Flip button to toss the coin.
  2. Watch the animation and see whether it lands on heads or tails.
  3. Use the totals to track how many heads and tails appear in your session.
  4. Enter custom labels to decide between two specific options.
  5. Use Multi-flip mode to flip several coins at once.
  6. Click Reset to clear the session history.

Example uses

  • Deciding who goes first in a board game.
  • Choosing between two restaurants or films.
  • Settling a friendly bet.
  • Demonstrating 50/50 probability in a classroom.

Fairness and probability

Each flip uses JavaScript’s built-in Math.random() and is treated as an independent 50/50 event. Custom labels do not change the underlying fairness. Previous flips do not influence future results.

Frequently asked questions

Is the coin flip truly 50/50?

The flip is designed to be fair: the result is chosen randomly with equal weighting for heads and tails. Math.random() is suitable for casual decisions and demonstrations, but it is not cryptographically secure.

Can I flip multiple coins at once?

You can flip repeatedly and the tool keeps a running total. A multi-flip mode is available for rapid consecutive flips.

Can I change the labels from heads and tails?

Yes. You can enter custom labels for the two sides, which is useful when the decision is not literally heads or tails.

Accessibility

  • The result is announced with a live region so screen readers read it automatically.
  • Controls are keyboard accessible.
  • Animation respects prefers-reduced-motion.