How is Heads or Tails chosen?

The tool reads a random byte from Web Crypto and maps even values to one side and odd values to the other. Both outcomes have the same number of possible byte values.

How much history is kept?

The current page keeps the 30 most recent flips and displays Heads and Tails counts across that retained history.

Does the history survive a reload?

No. The result and history are component state and reset when the page reloads.

Coin Flip

LocalFree

Flip a fair virtual coin to settle any decision. Cryptographically random heads or tails, with a running tally.

Runs in your browser; files and input stay on this device

About the coin flip

A coin flip is the classic 50/50 tiebreaker — for choosing who goes first, settling a friendly bet, or making a quick decision. This one uses the Web Crypto API for a genuinely unbiased result, not a predictable pseudo-random pattern, and keeps a history so you can see the running count of heads and tails. It all happens in your browser, instantly and for free.

How to use Coin Flip — Heads or Tails

1Select Flip coin and wait for the short animation.
2Read Heads or Tails and the running counts.
3Flip again to add another result to the recent history.

Frequently asked questions

How is Heads or Tails chosen?: The tool reads a random byte from Web Crypto and maps even values to one side and odd values to the other. Both outcomes have the same number of possible byte values.
How much history is kept?: The current page keeps the 30 most recent flips and displays Heads and Tails counts across that retained history.
Does the history survive a reload?: No. The result and history are component state and reset when the page reloads.