LCM & GCF Calculator
Result
GCF4
LCM24
↗ Math
LCM & GCF Calculator — free online calculator.
Formula
GCF: Euclidean algorithm — repeatedly replace the larger number with the remainder until 0. LCM = (a × b) / GCF.
- LCM & GCF Calculator calculates its result from First number (a), Second number (b). It uses the formula GCF: Euclidean algorithm — repeatedly replace the larger number with the remainder until 0. LCM = (a × b) / GCF.. Change any input to recalculate the result instantly.
- The main inputs are First number, Second number. Enter them in the units and format shown in the calculator.
- Keep comparable quantities in compatible units whenever the formula combines or compares them.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: LCM & GCF
Inputs
- First number: 12 a
- Second number: 8
GCF is calculated using the Euclidean algorithm, LCM = |a×b|/GCF.
Sample result: Calculating…
Frequently asked questions
What does the LCM & GCF calculate?
LCM & GCF Calculator — free online calculator.
Which values should I enter?
Enter First number, Second number using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: GCF: Euclidean algorithm — repeatedly replace the larger number with the remainder until 0. LCM = (a × b) / GCF..
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.