๐ฎ Gaming
Coin Flip Simulator
Flipping a coin many times does not produce a neat alternation โ long runs of the same side are far more common than people expect, because each flip is independent of the last. The simulator uses a seeded generator so the same seed always reproduces the same sequence.
How it works
Number of flips
Seed (change it to rerun)
Heads
Tails
Heads
Tails
Longest run of one side
Side of the longest run
First 20 flips
Frequently asked questions
How do I use the Coin Flip Simulator?
Fill in the fields above โ the result recalculates instantly as you type. Everything runs in your browser, so the values you enter are never collected or stored.
Is this calculator free?
Yes. It is completely free, requires no account, and works on phones, tablets and desktops.