Lowest Common Denominator Calculator

Calculate the Lowest Common Denominator (LCD) of two fractions. LCD = (denom1 × denom2) / GCD(denom1, denom2).

Formula

LCD = (d₁ × d₂) / GCD(d₁, d₂)

LCD of 4 and 6

Inputs
  • Denominator 1: 4
  • Denominator 2: 6

GCD(4,6)=2; LCD = 24÷2 = 12

Frequently asked questions

What is LCD?
Lowest Common Denominator - smallest number divisible by both denominators