Factorial Calculator

Factorial Calculator lets you factorial multiplies every integer from 1 through n using exact BigInt arithmetic. Enter your own values or load the worked example.

Method and calculation

Factorial multiplies every integer from 1 through n using exact BigInt arithmetic.

Inputs and settings

Factorial Calculator accepts Nonnegative integer (minimum 0, maximum 1000).

Worked example

Factorial Calculator example — Nonnegative integer: 20. Computed output: { "factorial": "2432902008176640000" }

Output and limitations

Factorial Calculator: Use finite inputs. Results use double-precision arithmetic.

Technical references: JavaScript numerical operations

Factorial Calculator FAQs

Factorial Calculator applies the following rule to your input: Factorial multiplies every integer from 1 through n using exact BigInt arithmetic. The worked example on this page uses the same processor as the result button.
Factorial Calculator has these boundaries: Use finite inputs. Results use double-precision arithmetic. Start by checking the nonnegative integer field against the units or format shown.
Factorial Calculator provides this sample: { "factorial": "2432902008176640000" }. Use the sample button to reproduce it, then replace the inputs with your own values.