CALCULATE · VISUALIZE · EXPLORE

Fraction Calculator

Add, subtract, multiply or divide two fractions.

● Live results · Runs on your device · No sign-up

Your inputs

Exact integer arithmetic within the safe-integer range; fractions are simplified.

Live results

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UNDERSTAND YOUR RESULTS

Fraction Calculator guide

Add, subtract, multiply or divide two fractions.

How to use this tool

Enter First numerator, First denominator, Operation, Second numerator, Second denominator.
Change a value to update the results and illustration. Check any validation message before using the output.
Copy the results or download CSV. Reset restores the example values.

A worked example

1/2 + 1/3 = 5/6. The decimal display is approximate; the fraction retains the exact ratio.

How it works

Exact integer arithmetic within the safe-integer range; fractions are simplified.

Frequently asked questions

How should I interpret the illustration?

It is a visual aid, not a replacement for the numeric output. Some charts compare values with different units, and those magnitudes are not directly comparable.

Can I use the result without checking the inputs?

Check units, signs, assumptions and rounding first. The tool cannot know whether the values you enter describe the real situation correctly.