What this calculator does
Find the least common denominator for two or more fractions or denominators.
How it works
The calculator evaluates LCD = least common multiple of all denominators. Inputs are checked before calculation, and invalid values such as zero denominators or out-of-range selections produce a clear error instead of a misleading result.
Input query strings and outputs
Use an input name in this page’s URL as ?name=value, and join additional inputs with &. Portable shared links may instead use the compact ?ac= state parameter.
Input query strings
1-
?denominators=DenominatorsText · Required · Default: 6, 8, 15
Outputs
3-
lcdLeast common denominatorText · Primary output
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countDenominators usedWhole number
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primeFactorsLCD prime factorizationText
Inputs and results
The inputs are Denominators. Results include Least common denominator, Denominators used, LCD prime factorization.