Permutation Calculator is a free online tool that displays the possible number of arrangements of objects. CoolGyan’S online permutation calculator tool makes the calculation faster, and it displays the permutations in a fraction of seconds.

## How to Use the Permutation Calculator?

The procedure to use the permutation calculator is as follows:

**Step 1:** Enter the value of n and r in the respective input field

**Step 2:** Now click the button “Solve” to get the permutation

**Step 3:** Finally, the permutation will be displayed in the output field

### What is Meant by Permutation?

In Mathematics, the permutation is defined as the possible number of arrangements of objects in a definite order. Here, the ordering of objects is important. In permutations, one should concern both the arrangement and the selection. It can be classified into three different categories, such as

- Permutation of n different objects
- Permutation when the objects are not distinct
- Permutation with repetition of objects

Thus, the formula to calculate permutations is given as follows:

Permutation, P(n. r) = n! /(n-r)!