Skip to main content
DevBench

How to flip the coin

  1. Press Flip coin — the coin spins once and lands on heads or tails, announced to screen readers as it changes.
  2. The tally underneath counts heads versus tails across your session, and the chip strip keeps the last twenty flips (newest first) so a best-of-three or best-of-five keeps its score without a notepad. Clear resets the strip for the next match.
  3. Flip as often as you like — every result is a fresh independent draw, so a run of tails tells you nothing about the next flip.

Why the coin is genuinely fair

Each flip takes one value from your browser's random number generator: the lower half of the range becomes heads, the upper half tails — an even split with no weighting and no memory of previous results. Nothing is sent to a server, nothing is stored, and the animation is a single 380 ms spin that disappears entirely when your system requests reduced motion. For decisions with more than two outcomes, the Spin Wheel is the same idea with slices.

Also useful: Dice Roller, Spin Wheel, and Magic 8-Ball.