Coin flip
Flip a virtual coin for heads or tails with cryptographically fair results.
Coin flip
Flip a coin online and get heads or tails instantly. Use it to settle a friendly argument, pick who goes first, break a tie, choose between two options or run a quick classroom demonstration of probability. Set the number of flips and each result lands on its own line, so you can toss once or generate a whole run of 1000 for a statistics exercise in a single click.
Three output formats cover different needs. "Heads / Tails" prints the full words in your language, "H / T" gives the compact letters that fit neatly into a spreadsheet column, and "1 / 0" produces a binary stream you can drop straight into code or a random-bit experiment. Whichever you pick, the tally under the output keeps a running count of how many heads and how many tails came up.
Fairness is the point. Every flip is drawn from crypto.getRandomValues, the browser's cryptographically secure random source, and read as the low bit of a random byte — an unbiased 0 or 1, so heads and tails are exactly equally likely on every single toss. There is no seed to guess and no server deciding the outcome.
Everything runs entirely in your browser. No flip is sent anywhere, logged or stored, so the result is genuinely yours and cannot be replayed or predicted. It works offline just the same, whether you need one toss or a thousand.