Greatest Common Divisor Calculator
Enter two numbers to find their greatest common divisor (GCD), also known as the highest common factor (HCF). Essential for simplifying fractions.
GCD
Enter values to calculate
How to Use the GCD Calculator
1
Enter the first number.
2
Enter the second number.
3
View the greatest common divisor.
Frequently Asked Questions
What is the GCD?
The greatest common divisor is the largest number that divides both numbers without a remainder.
How is GCD calculated?
The tool uses the Euclidean algorithm, which repeatedly divides the larger number by the smaller until the remainder is zero.
What is the GCD used for?
GCD is used to simplify fractions, find common denominators, and solve number theory problems.