Heads or tails in one click
A coin toss is the fairest way there is to settle a small question: two sides, one throw, no arguing. Press FLIP and the coin goes up, turns over in the air and lands on Heads or Tails. The result is written under it, big enough to read from across the room:
Every toss is decided by your browser’s own random number generator before the coin leaves the table, so the animation shows the result – it does not decide it. Each side has exactly the same chance, every time.
What people flip a coin for
- Who kicks off, who serves first, who picks sides.
- Settling a two-way choice when neither option is better: pizza or pasta, left or right.
- Classroom probability lessons – toss a hundred times and see how close you get to 50 : 50.
- Board and card games that call for a coin and nobody has one.
- A quick yes or no when you have been going back and forth for too long.
How to toss
- Press FLIP, click the coin itself, or press Ctrl + Enter.
- Watch it go up and turn over – the side facing up when it lands is the result.
- Toss again as many times as you like. Every result is added to the count.
More than one coin
Set How many coins to toss up to ten at once. They fly together, each landing on its own, and the line under them says how many came up heads and how many tails:
The count: is it really 50 : 50?
Every coin that lands goes into the Count: how many heads, how many tails, the share of each, how many Tosses so far and the Longest run of one side in a row. Toss a few dozen times and the two sides settle close to half each – toss only ten and a run of four or five of the same side is perfectly normal. That is exactly what a probability lesson wants to show:
Start the count again clears it for a new experiment.
Previous tosses
Previous tosses lists every toss, newest first, with the side each coin landed on:
Gold, silver or copper
Under Coin you can switch the metal. It changes nothing about the odds – only how it looks:
A faster or slower toss
Toss length makes the toss longer for suspense or shorter when you are flipping a lot. At zero there is no animation at all and the result appears at once:
Your coins are remembered
How many coins, the metal, the count and the history stay on this device, so they are still there next time. Save / load in the header moves them to another device or keeps a copy: