Coin Flipper
?
Heads
0
Tails
0
Total
0
How It Works
Each flip uses crypto.getRandomValues(), the browser's cryptographically secure random source. A single random bit (0 or 1) determines the outcome. The probability is exactly 50/50 for each flip, independent of all prior results.
Tips
- Each flip is independent. A long streak of heads does not make tails more likely on the next flip.
- Session stats reset when you refresh the page.
- Need a number instead? Use the Random Number Generator.
Frequently Asked Questions
Is this a fair coin flip?
Yes. Each flip has exactly a 50% chance of landing heads and 50% tails. The random source is cryptographically secure, meaning there is no bias or predictable pattern.
Why does my streak not affect the next flip?
This is the gambler's fallacy. Each flip is independent. Whether the last 10 flips were all heads or all tails, the next flip is still 50/50. The coin has no memory.
How long would it take to flip 100 heads in a row?
The probability is 1 in 2^100, which is roughly 1 in 10^30. At one flip per second, you would expect to wait longer than the age of the universe many times over.