Factorial Calculator

Calculate the factorial of any non-negative integer with step-by-step multiplication breakdown.

Enter Number *

Enter a non-negative integer (0-170 for accurate results)

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Factorial Result

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Step-by-Step Calculation

Complete multiplication breakdown

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Factorial

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Number (n)

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Digits

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Status

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Formula Reference

Factorial definitions

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Factorial Tips

Understanding factorial mathematics

🔢 Mathematical Disclaimer: Factorial n! = n × (n-1) × ... × 1. 0! = 1 by definition. Results are for educational purposes. Large numbers may be displayed in scientific notation.