LCM & GCD Calculator

Find LCM and GCD of numbers

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How to Use LCM & GCD Calculator

Enter numbers

Enter two or more numbers.

Calculate

Get LCM and GCD.

Steps

See step-by-step solution.

Why Choose AllTools LCM & GCD Calculator?

  • ✓ LCM calculation
  • ✓ GCD/HCF calculation
  • ✓ Multiple numbers
  • ✓ Step-by-step
  • ✓ Prime factorization method
  • ✓ No data stored

Why Use This Tool

  • ★ Instant calculations with no server round-trip
  • ★ Completely free with no usage limits
  • ★ No account or registration required
  • ★ Accurate results using standard mathematical formulas
  • ★ Works on any device including phones and tablets

Related Resources

Check prime numbers → Calculate factorials → Scientific calculator →

Frequently Asked Questions

What method is used? ▼
Uses the Euclidean algorithm for GCD and derives LCM from GCD: LCM(a,b) = |a×b| / GCD(a,b).
What method is used? ▼
Uses the Euclidean algorithm for GCD and derives LCM from LCM(a,b) = |a*b| / GCD(a,b).
Does this work on mobile? ▼
Yes. All AllTools calculators are fully responsive and work on phones and tablets.

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