Skip to content

Permutation and Combination Calculator

Calculate arrangements where order matters or selections where it does not.

Arrangement
Combinations nCr
120
10 choose 3
Formulan! / (r! × (n − r)!)
n10
r3

About the Permutation and Combination Calculator

Calculate arrangements where order matters or selections where it does not.

It runs entirely in your browser — nothing you type is sent to a server — and the result updates as you edit the inputs. Estimates are for educational and informational purposes only; see ourdisclaimer.

Common searches

Related calculators

Probability CalculatorChance of outcomes, dice rolls, or exact binomial successes — shown as percent and odds.Factor CalculatorList all positive factors of a whole number.

Browse more inMath.