Count how many ways to choose (nCr) or arrange (nPr) r items from n, with exact answers even when the numbers are huge.
loading toolHow to use the permutation and combination calculator
- Type your numbers in the boxes (pick your currency or units if asked).
- The answer updates as you type: no button to press.
- Copy the result, or share it on WhatsApp with one tap.
Questions
What is the difference?
Combinations ignore order (choosing a team); permutations count order (first, second, third prize).
Is my data private?
Yes. Everything happens inside your own browser: nothing you type or choose is uploaded to us or anyone else.
Is it free?
Completely free, with no sign-up, no watermark and no limit on how many times you use it. Light ads keep the site running.
