Permutations Calculator
Ordered selections without replacement: n! / (n − r)!. Enter your own values; the result updates only when you run the tool.
Your inputs
Use consistent units. Examples appear below each field.
Your result
Ready when you are.
Make the numbers useful.
Fill in the input panel and run the tool. Your answer and its calculation method will appear here.
How permutations calculator works
Ordered selections without replacement: n! / (n − r)!.
Try this example
- Total objects
- 10
- Objects chosen
- 3
720
Good to know
Which values should I enter?
Use the units shown in each label. Ordered selections without replacement: n! / (n − r)!.
Are my inputs saved automatically?
No. Recent tools contain tool names only. Inputs and results are stored only when you explicitly choose Save while signed in.
Can I share this tool?
Share the tool link. It opens a blank tool and does not include your private inputs or result.
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