Coin Flip
Flip a virtual coin and get Heads or Tails.
Each click produces a fresh result using the browser’s cryptographic random generator. Previous flips do not determine the next one. Up to 1,000,000 characters. Review the settings before running.
Your result
How to use Coin flip
- There is nothing to enter. This tool has no input field or settings.
- Choose Run Coin flip.
- Review the result, then use Copy result or a download link when available.
How Coin flip works
This coin flip tool gives you Heads or Tails with a single click. Each flip draws a fresh random value from your browser's cryptographic random number generator and maps it evenly to one of the two sides, so both outcomes have the same 50% chance. It runs entirely in your browser. Earlier flips have no effect on the next one, so a long streak of one side does not make the other side more likely.
Before you start
Agree on who takes Heads and who takes Tails, and whether one flip or best of three decides it, before you click.
A worked example
Five flips run here returned Tails, Heads, Tails, Tails, Heads. In a separate run of 10,000 flips the tool produced 5,021 Heads and 4,979 Tails, close to an even split.
What to expect
Flip a virtual coin and get Heads or Tails. Each click produces a fresh result using the browser’s cryptographic random generator. Previous flips do not determine the next one.
Common questions
Is an online coin flip really 50/50?
Yes. The tool picks between two outcomes using the browser's cryptographic random generator and discards values that would bias the result, so each side has an equal chance. A physical coin can show small biases from how it is tossed and caught, which this tool avoids.
After several Heads in a row, is Tails due?
No. Believing a result is due is the gambler's fallacy. Every flip is independent, so the chance of Tails is still 50% after any streak. Over many flips the totals tend to even out in proportion, but short runs of five or more of the same side are normal.
How do I do a best of three?
Click Run once for each flip and keep a tally. The first side to reach two wins takes it. Decide in advance that you are playing best of three so nobody can change the rules after seeing the first result.
Can I flip several coins at once?
This tool gives one result per click. If you need many outcomes at once, the Random number tool on Happytails.ai can generate a list of 0s and 1s with a minimum of 0, a maximum of 1 and a quantity you choose.