Fractions & Math Manipulation Tools
Common Denominator Calculator
Rewrite two or more fractions over their least common denominator.
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What is Common Denominator?
Fractions can only be added or compared once they share a denominator. The least common denominator is the smallest number every denominator divides into.
How it works
We take the LCM of the denominators, work out the multiplier each fraction needs, and rewrite every fraction over that denominator.
- Enter your input. Type or paste your input into the field above — the tool responds instantly.
- Review the result. Output updates live as you type. Everything runs entirely in your browser.
- Copy or download. Use the Copy button to grab the result, or Download to save it as a file.
Examples
Realistic sample
Type or paste any realistic input — the tool computes the result locally and instantly.
Common mistakes
Expecting a server round-trip
Nothing is uploaded — every tool in this category runs entirely in your browser.