Math Calculators

LCM Calculator – Find Least Common Multiple

Calculate the Least Common Multiple (LCM) of two or more numbers. Essential for fraction operations and math problems.

Number 1

Number 2

LCM Calculator Formula

LCM(a, b) = |a × b| / GCD(a, b)

The LCM is the smallest number divisible by both a and b.

LCM of 12 and 18:

GCD(12, 18) = 6

LCM = (12 × 18) / 6 = 36

What is LCM used for?

Calculate the Highest Common Factor (HCF) or Greatest Common Divisor (GCD) of two numbers.

Simplify ratios and solve proportion problems. Find equivalent ratios and missing values in proportions.

Calculate percentages easily. Find what percent one number is of another, or calculate the percentage of a number.