Greatest Common Divisor (GCD / GCF)
Calculate Greatest Common Divisor (GCD / GCF) instantly. Free online calculator with the exact formula, a worked example, and metric units. No signup required.
Greatest Common Divisor (GCD / GCF)
Number a
Number b
GCD
12
GCD
12
LCM
72
a
24
b
36
More about: Greatest Common Divisor (GCD / GCF)
What it calculates
The “Greatest Common Divisor (GCD / GCF)” calculator computes GCD from 2 parameters: number a, number b.
A core calculation for studying, engineering tasks, and checking solutions.
Example calculation
With parameters Number a = 24, Number b = 36 the result is 12 (Euclid's algorithm).
How to use
- Enter number a and number b — each field above is adjustable with a slider.
- GCD is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is Greatest Common Divisor (GCD / GCF) calculated?
The Greatest Common Divisor (GCD / GCF) calculator computes GCD from number a, number b. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Greatest Common Divisor (GCD / GCF) calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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