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Coin Flip Simulator
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Simulate a random coin flip (heads or tails) online to help you make quick decisions instantly.
Toss 1-100 coins simultaneously.
Utilizes browser's built-in random number generator. Each flip has an independent 50% chance for heads or tails.
The more you flip, the closer the heads-to-tails ratio approaches 50:50 (Law of Large Numbers).
Set the number of coins and click 'Flip Coins' to start.
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Struggling with a 50/50 decision? Our Coin Flip Simulator uses a random algorithm to simulate a real coin toss online, outputting "Heads" or "Tails" with an equal probability each time. It supports quick single flips or batch multiple simulations, automatically calculating the count and percentage of heads and tails to provide a fun reference for daily decisions. The core principle is based on pseudo-random number generation, ensuring that each result is independent and unpredictable.
Example: Enter 10 for the number of flips and click Flip. The results might be: 1st Tails, 2nd Heads, 3rd Heads... 10th Tails. Summary: Heads: 4 (40%), Tails: 6 (60%).
The number of flips must be a positive integer; decimals, negative numbers, or empty values are not supported. The results are for entertainment and reference purposes only and should not be used as the sole basis for major financial, legal, or medical decisions. The tool runs entirely on your local client and does not record or upload any personal usage data. If the tool is unresponsive, please check if JavaScript is disabled in your browser, or try refreshing the page and trying again.
The coin flip simulator is based on a pseudo-random algorithm (typically linear congruential or a more modern Xorshift), which is sufficient to simulate independent and identically distributed Bernoulli trials. If higher cryptographic randomness is required, integrating a true random source via the Web Crypto API could be considered. Statistical reminder: A small number of flips may show a significant deviation from 50% (e.g., 7 heads out of 10 flips). This is a normal fluctuation, and the frequency will gradually converge as the number of flips increases. For daily use, we recommend flipping an odd number of times to avoid a tie, or simply using the summary percentage of multiple flips to help you decide.
