The Factorial Calculator computes the factorial of a non-negative integer, which is the product of all positive integers less than or equal to that number. This tool is useful for students, teachers, programmers, and anyone working with permutations, combinations, or mathematical functions.

Factorial Calculator - Instruction Manual

• Step 1: Enter a non-negative integer into the input field.
• Step 2: Click the Calculate button to compute the factorial of the entered number.
• Step 3: View the result displayed below the form.
• Clear: Use the Clear button to reset the form and result area.
• Tips: Factorials grow rapidly; avoid large inputs as they may cause performance issues.
• Troubleshooting: Only non-negative integers are accepted. Decimals and negative values will be rejected.
• Support: For technical issues, contact your website administrator or developer.