LCM Calculator
Find the least common multiple (LCM) of two or more whole numbers — exact, however large.
Least common multiple
36
- GCF
- 6
Show the work
Multiply, divide by the gcd
lcm(a, b) = |a × b| ÷ gcd(a, b)
|12 × 18| ÷ 6 = 36
How it works
lcm(a, b) = |a × b| ÷ gcd(a, b); the LCM of a list folds pairwise
Questions
- How does the LCM calculator work?
- lcm(a, b) = |a × b| ÷ gcd(a, b); the LCM of a list folds pairwise.
- What do I need to enter?
- Whole numbers. Optional fields can be left blank.
Related tools
- Modulo CalculatorFind a mod n — the remainder after division — with both the math (always positive) and programming conventions.
- Quadratic Equation SolverSolve ax² + bx + c = 0 for real or complex roots, with the discriminant and vertex.
- Cubic Equation SolverSolve ax³ + bx² + cx + d = 0 for all three roots, real or complex.
- FOIL CalculatorMultiply two binomials (ax + b)(cx + d) with the FOIL method and see each step.
- Completing the Square CalculatorRewrite ax² + bx + c in vertex form a(x − h)² + k by completing the square.
- Fraction, Decimal & Percent ConverterConvert between fractions, decimals and percents — type any one, get all three, including repeating decimals.
Want this on your site? Embed the lcm calculator.