Coin Flip
Flip a fair coin online with a smooth 3D animation. Flip once for quick decisions or run 5, 10, 50 or 100 flips at once, with live heads and tails counts, percentages and a one-tap reset, all stored locally in your browser.
How does the online coin flip work?
When you press Flip or tap the coin, the result is decided instantly by your browser's random number generator, and then the 3D animation plays to reveal it. The animation is purely visual — the outcome is already fixed before the coin starts turning, so the spinning you see never influences the result.
Is the flip really 50/50?
Yes. Each flip draws from a uniform random source, so heads and tails are equally likely and every flip is independent of the ones before it. Over many flips the counts converge toward 50% each, which is exactly what the statistics panel lets you watch happen.
What is the multi-flip mode?
Pick 5, 10, 50 or 100 in the flip count selector and press Flip: the coin spins rapidly through that many tosses in a couple of seconds and then shows a summary, for example 100 flips with 53 heads and 47 tails. It is the fastest way to gather a real sample of flips.
Are my flip statistics saved?
The heads and tails counters are stored locally in your browser with localStorage, so they survive a page reload, but nothing is ever uploaded to a server and no account is needed. Pressing Reset zeroes the counters and clears the saved totals.
What can I use a coin flip for?
Any two-option decision: who kicks off, which team goes first, settling a tie-break or a bet, choosing between two restaurants, or classroom demonstrations of probability and the law of large numbers. Assign one option to heads and the other to tails before you flip.
Why is my percentage not exactly 50%?
Short samples drift. With only ten flips a 70/30 split is completely normal; as the number of flips grows into the hundreds, the percentages move closer to an even 50/50. This drifting is the law of large numbers in action, not a sign the coin is unfair.
Does it work on mobile and offline?
Yes. The coin area is a large touch target, so flipping with a thumb is easy, and the page only loads once — after that every flip is computed and animated on your device with no network requests.
Can I use it for a raffle or a group decision?
Yes. Assign heads to one person, team or option and tails to the other, then flip in front of everyone or share your screen. For groups larger than two, chain flips or use the multi-flip summary to build a fair bracket.
How to Use Coin Flip
This coin flipper gives you a fair 50/50 decision in one tap. The result is drawn from your browser's random number generator before the 3D animation plays, so the spin you see is purely presentation. Flip once for quick calls, or use the multi-flip mode to run 5, 10, 50 or 100 tosses at once and get a summary, with heads and tails counts and percentages tracked the whole time.
- Pick how many flips to run with the Flips selector: 1 (default), 5, 10, 50 or 100.
- Tap the coin itself or press the Flip button — the coin spins with a 3D animation and lands on heads or tails.
- In multi-flip mode the coin flips rapidly through all tosses, a live counter shows the progress, and a summary line appears at the end (for example: 100 flips: 53 heads · 47 tails).
- Read the Statistics cards: heads count, tails count, total flips and the heads percentage, which drifts toward 50% as the sample grows.
- Press Reset to zero the counters and clear the saved totals, or just change the flip count and flip again.
The counters are stored only in this browser, so they survive a page reload — handy for a running classroom experiment on the law of large numbers. Assign heads to one option and tails to the other before flipping for a group decision.
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