Random Number Generator
Random numbers in a range.
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Fun & Random
Coin Flip
Flip a fair coin — heads or tails — one or many at a time, with a running tally.
Result
—
Heads or tails.
| Heads this flip | — |
|---|---|
| Tails this flip | — |
| Session total | — |
| Heads rate | — |
Show our math
Enter your figures above to see the step-by-step working.
Flipped in your browserEverything computed client-side — nothing leaves this page
How the Coin Flip Works
Press Flip and the tool simulates a fair coin: each toss has an exactly even chance of heads or tails, decided by the browser’s random function. Flip several coins at once to settle group decisions, or keep flipping a single coin and watch the running tally.
The session counter shows how your heads rate settles toward 50% as flips add up — a live demonstration of the law of large numbers. Short runs can streak surprisingly far from 50/50, which is completely normal.
heads if random fraction < 0.5, otherwise tails
Frequently Asked Questions
Is the coin flip fair?
Yes. Heads and tails each have an exact 50% chance on every flip, independent of previous results.
Why did I get five heads in a row?
Streaks are normal in random sequences. Each flip is independent, so past results don’t change the next — but over many flips the rate approaches 50%.
Can I flip more than one coin?
Yes. Set the number of coins and each Flip tosses them all, reporting how many heads and tails came up.
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