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Utilities & Fun

Coin Flip & Decision Spinner

Settle it. Flip an animated coin, or type your options into the wheel and let it spin. Both use your browser's cryptographic randomness, so the outcome is genuinely unbiased.

Runs entirely in your browser — nothing is uploaded

HEADS
TAILS

This session

0Heads
0Tails
0Flips
1
Outcomes come from crypto.getRandomValues() with rejection sampling, so heads and tails really are equally likely. Over a large batch the split should sit close to 50/50 — try 1000 flips and see.

Good to know

  • Outcomes are drawn from crypto.getRandomValues() with rejection sampling, so every option really is equally likely.
  • Running totals are kept for the session so you can sanity-check the fairness yourself.

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