Generators tool

Coin Flip

Flip a virtual coin with history and streak stats.

Free Runs in your browser
H
T
Tap Flip
0Heads
0Tails
0Total flips
–Current streak
0Longest streak

About this tool

Coin Flip tosses a virtual coin with a 50/50 chance of heads or tails. It keeps a running history so you can see the totals, percentages and streaks, which is handy for quick decisions or for showing how probability works.

How to use Coin Flip

  1. Press Flip coin to toss once, or Flip 10 for a quick batch.
  2. Read the result and the running totals.
  3. Press Reset to clear the history.

Questions people ask

Is this coin flip fair?

Yes. Each flip uses the browser’s secure random generator with exactly a 50% chance of heads and 50% of tails, and no flip depends on the last one.

How likely is a streak of 5 heads?

For any 5 flips in a row the chance is 1 in 32 (0.5^5). Over 100 flips a run of 5 or more of the same side is very likely to show up.

Is a real coin exactly 50/50?

Not quite. Research by Diaconis and others found a real tossed coin lands on the side it started on about 51% of the time.

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