Factorial Calculator
Calculate factorials (n!). Handles large factorials with high precision.
Value of n (0! ~ 20!)
| n | n! |
|---|---|
| 0! | 1 |
| 1! | 1 |
| 2! | 2 |
| 3! | 6 |
| 4! | 24 |
| 5! | 120 |
| 6! | 720 |
| 7! | 5,040 |
| 8! | 40,320 |
| 9! | 362,880 |
| 10! | 3,628,800 |
| 11! | 39,916,800 |
| 12! | 479,001,600 |
| 13! | 6,227,020,800 |
| 14! | 87,178,291,200 |
| 15! | 1,307,674,368,000 |
| 16! | 20,922,789,888,000 |
| 17! | 355,687,428,096,000 |
| 18! | 6,402,373,705,728,000 |
| 19! | 121,645,100,408,832,000 |
| 20! | 2,432,902,008,176,640,000 |
How to Use
Enter Number
Enter number for factorial
Calculate
Factorial is calculated automatically
Check Results
Check result and digit count
Features
Instant Calculation
Calculate factorial in real-time
Large Numbers
Supports large factorials with BigInt
Calculation Steps
Show expansion formula
FAQ
🔗Related Tools
Percentage Calculator
Calculate percentages easily. Instantly compute ratios, rate of change, and percent values.
Split Bill Calculator
Easily split bills for dining and parties. Instantly calculate per-person amount.
Random Number Generator
Generate random numbers within a specified range. Customize count, decimal places, and duplicate control.
Number Base Converter
Convert between binary, octal, decimal, and hexadecimal. Also supports custom base conversion (base 2 to 36).
GPA Calculator
Calculate your GPA (Grade Point Average) from course grades. Supports credit-weighted calculations.
Ratio Calculator
Calculate, simplify, and solve ratios. Solve for unknown values in A:B = C:D proportions.