Combination / Permutation

nCr and nPr calculator. Use the Combination / Permutation below — everything runs in your browser, nothing is uploaded.

How it works

Enter your values in the Combination / Permutation above. Results update instantly and stay on your device.

Formula and source

This tool applies its standard published method. Check the linked source for the exact definition.

Tips

• Double-check units before trusting a result.
• Bookmark the page — its address never changes.

FAQ