Free Least Common Multiple (LCM) Calculator Online
Find the smallest positive integer that is divisible by all numbers in your dataset using prime factorization and Euclidean GCD identities. — 100% free online utility, zero sign-up, zero paywalls, and private client-side processing.
How It Works
Enter Integers
Input numbers separated by commas (e.g. 12, 18, 30).
Prime Factorization
Decomposes each term into prime power factors.
Compute LCM
Takes the highest power of each prime to produce the unified LCM.
Frequently Asked Questions
Related Math & Science Calculators & Utilities
Interlinked precision tools in the Math & Science collection.
Greatest Common Divisor (GCD / GCF) & LCM Calculator
Find the Greatest Common Divisor (GCD / GCF) and Least Common Multiple (LCM) of two or more numbers using the Euclidean algorithm.
Fraction Simplifier & Mixed Number Calculator
Simplify improper fractions to lowest terms, convert fractions to decimals, find mixed numbers, and execute fraction addition/multiplication.
Prime Factorization & Primality Test Calculator
Factorize any integer into its unique prime numbers (e.g., 360 = 2³ × 3² × 5) and instantly test if a number is prime or composite.
Scientific Calculator (Trigonometry, Logarithms & Powers)
High-precision scientific calculator supporting sine, cosine, tangent, natural log (ln), exponential powers, square roots, and radian/degree modes.
Quadratic Equation Solver (Real & Complex Roots with Steps)
Solve any quadratic equation ax² + bx + c = 0 instantly. Computes discriminant (b² - 4ac), real roots, and complex imaginary roots with full steps.
Standard Deviation & Variance Calculator (Sample & Population)
Calculate Population (σ) and Sample (s) Standard Deviation, Variance, Mean, Sum of Squares, and Margin of Error for any numeric dataset.