Flip a coin
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Heads or tails?
How we flip: your browser's secure random number generator chooses heads or tails, each exactly half the time. The coin then turns to land on that side.
How to use the flip a coin
- Choose to flip once, or best of 3, 5, or 7.
- Press Flip, or Enter or Space.
- The coin lands and the result shows below it. Best of shows every flip.
- The tally counts heads, tails, and streaks. Press R to clear it.
Questions
Is the coin fair?
Yes. Heads and tails each have exactly half the chance, from your browser's secure random number generator. Past flips make no difference to the next one, even after a long streak.
How does best of 3 work?
The coin is flipped until one side has won two flips, so it takes two or three flips. Best of 5 needs three wins and best of 7 needs four. Every flip is shown.
Why did I get five heads in a row?
Streaks happen more often than people expect. In 100 fair flips, a run of five or more of the same side is likely. The tally shows your longest streak.
What are the keyboard shortcuts?
Enter or Space flips. R clears the tally. F turns full screen on and off.
Does the coin spin if I prefer less motion?
No. If your device is set to reduce motion, the result shows straight away.
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