Not sure which calculator to use? Here's a side-by-side comparison of the Factorial Calculator and Permutation Calculator to help you pick the right one for your needs.
Calculate the factorial of any number up to 170. See the number of digits, trailing zeros, and the exact factorial value for smaller inputs.
Calculate permutations nPr (ordered arrangements) using the formula n!/(n-r)!. Find the number of ways to arrange r items from n items.
| Feature | Factorial Calculator | Permutation Calculator |
|---|---|---|
| Category | Math | Math & Science |
| Inputs | 1 required fields | 2 required fields |
| Outputs | 4 results | 3 results |
| Chart | No chart | No chart |
| FAQs | 3 answered | 3 answered |
Combination Calculator vs Factorial Calculator
Math & Science
Factorial Calculator vs Prime Factorization Calculator
Math
Factorial Calculator vs Fibonacci Number Calculator
Math
Factorial Calculator vs Number Sequence Calculator
Math
Factorial Calculator vs Prime Number Checker
Math
Combination Calculator vs Permutation Calculator
Math & Science
Choose the Factorial Calculator if you need to calculate n! result. Use the Permutation Calculator if you need to calculate permutations (npr). Both calculators are free and require no sign-up.
