Don's Tools · Generators · Coin Flip

Coin flip

Heads or tails, settled fairly. Flip a coin with a quick spin, use your own labels, or run ten or a hundred flips at once, all in your browser.

Heads
0Heads
0Total flips
0Tails
Coin Flip is a quick way to settle a heads or tails decision in your browser. Each flip uses your browser's secure random generator so it is genuinely fair, with a short spin animation and a running tally of the results. You can rename the two sides to anything you like and flip ten or a hundred times at once to see how the odds even out. Nothing is saved or uploaded.

Frequently asked questions

Is the coin flip really fair?

Yes. Each flip uses your browser's secure random generator, the same kind used for cryptography, so heads and tails each have an exact fifty percent chance with no bias.

Is anything saved or uploaded?

No. The whole tool runs in your browser and nothing is sent anywhere. Your running count is kept only on screen and resets when you reload.

Can I use my own labels instead of heads and tails?

Yes. Change the two side labels to anything you like, such as Yes and No or two names, and the coin and the running totals update to match.

What are the multi-flip buttons for?

Flip x10 and x100 run that many flips instantly and add them to the totals, which is handy for quickly seeing how results even out over many tries.

Does the running count mean the next flip is due to change?

No. Each flip is independent, so a long run of heads does not make tails more likely next. The totals simply record what has happened so far.