LCD Calculator
Find the Least Common Denominator of Fractions
Separate fractions with commas
Understanding Least Common Denominator (LCD)
The least common denominator (LCD) is the smallest positive number that is divisible by all denominators in a set of fractions. Finding the LCD is crucial for:
- Adding or subtracting fractions
- Comparing fraction values
- Simplifying fraction expressions
Quick Example
For fractions 1/2 and 1/3:
- Find multiples of 2: 2, 4, 6, 8, ...
- Find multiples of 3: 3, 6, 9, ...
- The smallest common multiple is 6
- Therefore, LCD = 6