Heads
0
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Coin Flip
Click Flip and get heads or tails instantly. Crypto-random so it is perfectly fair. The classic tiebreaker.
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Click Flip to start
Tails
0
Heads %
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Streak
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Is this fair?
Yes — each flip is independent with exactly a 50% chance of heads or tails. We use crypto.getRandomValues() sourced from OS entropy. No bias, no memory, no way to predict. Physical coins can be slightly biased by weight distribution — this one cannot.
The gambler's fallacy
Five heads in a row? The next flip is still 50/50. The coin has no memory. This is one of the most common misunderstandings in probability — streakes of any length are always possible and never change the next outcome.
Frequently asked questions
Can I get 10 heads in a row?
Yes — (0.5)^10 ≈ 0.098%. Rare but not impossible. Over 1,000 flips expect roughly one streak of 10.
How is this different from a real coin?
Statistically identical. Physical coins have tiny biases from minting; this one has zero bias.
Multiple coins at once?
Click Flip multiple times quickly — each click is one independent flip.
Deciding among 3+ options?
Use our <a href="/tools/random-number-generator">Random Number Generator</a> with min=1, max=N.
History reset?
Stored only in browser memory — gone on reload or Reset button. Nothing is persisted.
Last updated
For general calculations only. Not financial, tax, or legal advice — see our disclaimer.