How to flip a coin online
Decide what heads and tails stand for, then press Flip coin. The outcome appears immediately. Use another flip for a new independent choice, or open the history to compare recent outcomes and copy your record.
Understanding a 50/50 chance
Heads and tails each have a one-half chance on every flip. A short series does not have to split evenly, and a streak does not make the other side more likely next time. Use a coin for two options or the number generator for a longer list.
What the history and counters show
Every flip is added to the top of the history, and the line above the list keeps a running tally of how many results are recorded and how many of them are heads or tails. Only the latest 100 flips are kept: after that, the oldest entry drops off and the tally follows the visible list. The result line also numbers each round, which helps when you flip several times in a row and need to know which outcome belongs to which question. Copy history puts the whole list on your clipboard, one result per line, newest first. Clear history empties the list and restarts the round count.
Fair ways to settle a decision
Agree on what each side means before anyone presses the button, and accept the first result unless you said in advance that it would be best of three or best of five. Over 100 flips you can expect roughly 50 heads, yet totals anywhere between about 40 and 60 are perfectly normal, and runs of five or six identical results turn up regularly. That is ordinary chance, not a fault. When there are more than two options, give each one a number in the Random Number Generator, spin a custom wheel with your own entries, or split a group with the Random Team Generator.
How the coin decides
Each flip asks the browser’s Web Crypto API for a 32-bit random value and maps it to heads or tails with exactly equal weight. The result is produced on your device inside this tab and is not stored by the tool. If secure randomness is unavailable, for example in an outdated browser, the page shows an error instead of falling back to a weaker generator.
