Mathematics calculator

Fraction Calculator

Enter two fractions and choose an operation.

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Calculator

Enter values

Results update automatically as soon as enough values are available.

Math

First numerator
First denominator
Operation
Second numerator
Second denominator

Result

About this calculator

How it works

Fraction operations use common denominators for addition and subtraction, and numerator-denominator products for multiplication and division.

Formulas

Formulas used

Add

a/b + c/d = (ad + bc) / bd

Multiply

a/b x c/d = ac / bd

Worked example

Example calculation

Addition

1/2 + 1/4 = 3/4

Guide

How to use this calculator

Enter the requested values. For datasets, separate numbers with commas, spaces, or line breaks.
Choose an operation where the calculator provides a menu.
Read the highlighted answer first, then use the supporting values for checking your work.

Reference

What the results mean

Simplified fraction

The result reduced by the greatest common divisor.

Decimal value

The simplified result written in decimal form.

Assumptions and limits

Before using the result

Results are rounded for readability.
Use the formula and supporting values to check important calculations.
For engineering, finance, or coursework decisions, confirm the required method, units, and significant figures.

FAQ