Factorial Calculator
Factorial = product of integers from 1 to n; 0! = 1. 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
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Fill in the input panel and run the tool. Your answer and its calculation method will appear here.
How factorial calculator works
Factorial = product of integers from 1 to n; 0! = 1.
Try this example
- Nonnegative integer
- 5
120
Good to know
Which values should I enter?
Use the units shown in each label. Factorial = product of integers from 1 to n; 0! = 1.
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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