Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Math
Permutation Calculator
Calculate the number of ordered arrangements of r items chosen from n distinct items, where the order of selection matters. Ideal for rankings, sequences, and any selection where position counts.
Fill in the required fields to see your result.
Math
Factorial Calculator
Instantly compute the factorial of any non-negative integer. Use it for combinatorics, permutations, probability problems, and algebra involving n!
Fill in the required fields to see your result.
Key differences
| Permutation Calculator | Factorial Calculator | |
|---|---|---|
| Category | Math | Math |
| Inputs required | 2 | 1 |
| Result | P(n,r) | Factorial |
| What it does | Calculate the number of ordered arrangements of r items chosen from n distinct items, where the order of selection matters. Ideal for rankings, sequences, and any selection where position counts. | Instantly compute the factorial of any non-negative integer. Use it for combinatorics, permutations, probability problems, and algebra involving n! |