Does Permutation upload my file or text to Tool-You servers?

No. Permutation runs in this browser tab. Files stay on the device. Limit note: 0≤r≤n≤20.

Should I use Combination instead of Permutation?

Use Permutation when you need nPr with n and r. Use Combination when you need nCr with n and r. They share a category (Calculate) but not the same job.

Permutation

nPr with n and r.

P(n,r) = n! / (n−r)! for ordered selections. Enter n and r; results stay exact for small integers used in combinatorics drills.

What Permutation does

P(n,r) = n! / (n−r)! for ordered selections. Enter n and r; results stay exact for small integers used in combinatorics drills.

Permutation sits in the Calculate group on purpose. It is not Combination (nCr with n and r.) and not Factorial (n! for 0–200 with digits and trailing zeros.). Choose this page when you need nPr with n and r. If you stretch Permutation into a neighbor’s job, the result will look wrong even though the site chrome looks the same.

How to use Permutation

Confirm you need Permutation, not Combination (nCr with n and r.). Address: /permute.
Enter the numbers or dates Permutation uses. nPr with n and r.
Read the result as Permutation defines it — not as Factorial (n! for 0–200 with digits and trailing zeros.). P(n,r) = n! / (n−r)! for ordered selections. Enter n and r; results stay exact for small integers used in combinatorics drills.
Permutation is an estimate in the browser, not professional advice. 0≤r≤n≤20.
Need a different formula? Try Factorial (n! for 0–200 with digits and trailing zeros.) instead of stretching Permutation.

When not to use Permutation

Skip Permutation when a neighbor tool matches better — start with Combination or Factorial — or when the description already warns the job will fail. In the tool’s own words: P(n,r) = n! / (n−r)! for ordered selections. Enter n and r; results stay exact for small integers used in combinatorics drills.

Questions about Permutation

What does Permutation do that other Calculate pages on this site do not?: P(n,r) = n! / (n−r)! for ordered selections. Enter n and r; results stay exact for small integers used in combinatorics drills. Short version: nPr with n and r.
Does Permutation upload my file or text to Tool-You servers?: No. Permutation runs in this browser tab. Files stay on the device. Limit note: 0≤r≤n≤20.
Should I use Combination instead of Permutation?: Use Permutation when you need nPr with n and r. Use Combination when you need nCr with n and r. They share a category (Calculate) but not the same job.
What are the limits of Permutation?: 0≤r≤n≤20. Also: P(n,r) = n! / (n−r)! for ordered selections. Enter n and r; results stay exact for small integers used in combinatorics drills.