Statistics & Probability
Instant, private, and free
Coin Flip Probability Calculator.
Calculate the probability of exactly k heads in n independent flips.
On-device calculationNo signup
01
Set your values
Results update as you type.
02 / ANSWER
Probability: 0.246094
Percent: 24.609375
Results update automatically as you type.
FAQs
What does the coin flip probability calculator calculate?
Calculate the probability of exactly k heads in n independent flips.