FREE ONLINE CALCULATOR / MATH & NUMBERS
Combination Calculator
Count ways to choose r items from n without ordering. Fast, private, and built to make every number easier.
Input values
✦ InteractiveHow does this calculator work?
Count ways to choose r items from n without ordering. Edit the inputs and see the computed results. All calculations take place inside your browser, without submitting values to a server.
C(n,r) = n!/(r!(n−r)!)
KEEP EXPLORING
View category →