LCM and GCD calculator
Calculate the Least Common Multiple (LCM) and Greatest Common Divisor (GCD / HCF) for two or more integers instantly.
Integers setComma, space, or newline separated
Greatest Common Divisor (GCD)6Highest common factor (HCF)
Least Common Multiple (LCM)72Lowest common denominator
Examples:
Euclidean algorithm precision
Parsed count3 numbers
Input validationValid integers
How it works
1
Input your numbers
Provide two or more positive integers separated by commas or spaces.
2
Euclidean algorithm
Computes the greatest common factor and lowest common multiple simultaneously.
3
Instant twin metrics
Both GCD and LCM solve instantly in high-precision BigInt arithmetic.