LCM Calculator

Find the least common multiple of two or more whole numbers. Enter numbers separated by commas, spaces, or new lines.

Numbers

Use this LCM Calculator to find the least common multiple of two or more whole numbers. The LCM is the smallest positive number that is a multiple of every entered number.

Calculation Method

Using prime factorization, take every prime factor that appears in the numbers and use its highest required power.

Example

Find the LCM of 24 and 36.

24 = 2³ × 3

36 = 2² × 3²

Use the highest power of each prime:

LCM = 2³ × 3²

LCM = 8 × 9 = 72

Therefore, LCM(24, 36) = 72.

Source

OpenStax Prealgebra — Prime Factorization and Least Common Multiple

Related Tools

Triangle Calculator

Calculate triangle area, perimeter, angles, and side lengths using SSS, SAS, AAS/ASA, right triangle, and base-height methods.

Basic Calculator

Use this free basic calculator to solve addition, subtraction, multiplication, division, decimals, percentages, and parentheses-based math expressions.

Significant Figures Calculator

Use our Significant Figures Calculator to count sig figs, round numbers or expressions, and show decimal, scientific, and E notation.

Decimal to Fraction Calculator

Use this Decimal to Fraction Calculator to convert decimals into simplified fractions, mixed numbers, percentages, and closest simple fractions with steps.

Log Calculator (Logarithm)

Log Calculator helps you solve logarithms with base 10, base e, base 2, or any custom base. Get fast and accurate log results online.

Pythagorean Theorem Calculator

Pythagorean Theorem Calculator solves missing sides of a right triangle fast. Use it to find the hypotenuse or any unknown side easily.

Area Calculator

Use this Area Calculator to calculate rectangle, square, triangle, circle, trapezoid, parallelogram, and ellipse area with unit conversion.

Circumference Calculator

Use our Circumference Calculator to find circle radius, diameter, circumference, and area from any one known value with unit conversions.

Slope Calculator

Use our Slope Calculator to find slope, angle, percent grade, line equation, y-intercept, rise/run, and distance using two points or other methods.