LCM & HCF Calculator

Numbers

Enter numbers separated by commas

Numbers (comma separated) Enter 2 or more positive numbers

Quick Examples

LCM × HCF 72 × 6 For 12, 18, 24

LCM 72

                        HCF
                        6
                    

📐 LCM = 72, HCF = 6. Product = 432

LCM (Least Common Multiple) is the smallest number divisible by all given numbers. Example: LCM of 4 and 6 = 12

HCF (Highest Common Factor) / GCD is the largest number that divides all given numbers. Example: HCF of 12 and 18 = 6

For 2 numbers: LCM × HCF = Product of numbers
Example: 12 × 18 = LCM(12,18) × HCF(12,18) = 36 × 6 = 216

1. Find prime factors of each number
2. Take highest power of each prime
3. Multiply them
12 = 2²×3, 18 = 2×3², LCM = 2²×3² = 36