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Permutation Calculator
Count ordered arrangements nPr.
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โก Instant Results
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nPr
Compare Your Options And Get Clear Answers
Count ordered arrangements nPr.
Permutation Estimator
Enter your numbers below for an instant estimate.
0
๐ก Tip: Keep n at 20 or under.
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Permutation Quick Guide
Typical values for reference.
| Items n | Chosen r | Spare | nPr |
|---|---|---|---|
| 10 | 3 | 1 | 720 |
| 5 | 2 | 1 | 20.0 |
| 8 | 8 | 1 | 40,320 |
| 12 | 4 | 1 | 11,880 |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Permutation Calculator FAQ
Answers to common questions about this calculator.
It uses the formula shown with your inputs. Real conditions vary, so treat it as a guide.
Keep n at 20 or under.
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.
Yes. Replace each input with your own figures and the result updates instantly.