Created By : Vaibhavi Kumari
Reviewed By : Rajashekhar Valipishetty Phani Ponnapalli
Last Updated : Mar 21, 2023

Our coin flip probability calculator is a free online tool that finds a probability of a coin. All you need to do is give the no. of heads and the no. of flips as inputs and get the output by pressing the calculate button.

Number of flips (n)

I want to have

Steps to Find the Probability of Coin Flip

Go through the guidelines which are shown below to find the probability of flipping a coin:

  • Firstly, write down all the values which are given in the problem.
  • Then you need to find the total possible outcomes and then find the no. of favorable outcomes.
  • After that, apply the probability formula.
  • Then, you will get the possible outcomes.

Coin Flip Probability Example


Question: Find the probability of obtaining 4 heads when you flip a coin 10 times?


Number of times you need to flip a coin (n) = 10

Total Possible outcomes = 2n= 210=2x2x2x2x2x2x2x2x2x2 = 1024.

Total no.of favourable outcomes = 10C4 = 201

No.of heads = 4.

Let us use the probability formula,

Probability = no of favorable outcomes/ total number of possible outcomes

probability = 201/1024. is free that has many probability calculators which gives you instant outcomes without any errors.

FAQs on Coin Flip Probability Calculator

1. What is the probability of obtaining a tail when we flip a coin?

The possible outcomes when a coin is flipped are 2, i.e. head or tail. The probability of getting a tail when a coin is tossed is 1/2 or 50%.

2. How to calculate the Probability?

Probability can be calculated using the formula, probability = No. of favorable outcomes/ total no.of possible outcomes.

3. What is the best website for coin flip probability? is the best website for coin flip probability calculator