How to use the coin flip
Call a side, flip and read the sequence.
1
Choose the coin count
One coin gives a single decision; several coins show a distribution.
2
Make your call
Pick heads or tails before changing the seed.
3
Change the seed
A new seed produces a new set of flips without relying on the clock.
What does this tool do?
This coin flip uses a seeded generator so the page does not change on every render. Flip a single coin, call heads or tails, or toss a handful and count the split.
The Formula
Each coin draws a uniform value in [0, 1); values below 0.5 are heads, the rest are tailsFrequently Asked Questions
Is this coin flip fair?
Each toss is drawn from a uniform distribution, so heads and tails are equally likely. The seed only makes the outcome reproducible, not biased.
Why does the result stay the same?
The calculation is deterministic by design so the page does not change on every render. Change the seed to get a new flip.