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Fraction Calculator

Add, subtract, multiply and divide fractions with the working shown.

First fraction
Second fraction

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Working

    Quick Tool Overview

    The Fraction Calculator adds, subtracts, multiplies and divides fractions and gives the answer in lowest terms, as a mixed number and as a decimal. Mixed numbers such as 2 3/4 can be entered directly, and every step of the working is shown.

    What it does
    Performs arithmetic on fractions and simplifies the result
    You give it
    Two fractions or mixed numbers and an operation
    You get back
    The simplified fraction, mixed number, decimal and full working
    Best for
    Homework, teaching, recipes and measurements
    Calculators Free, unlimited use No sign-up Runs in your browser

    About the Fraction Calculator

    Enter two fractions, choose an operation, and get the answer in lowest terms along with the mixed number and the decimal. Whole-number parts are supported, so you can work with mixed numbers such as 2 3/4 without converting them first.

    The steps matter more than the answer if you are learning or teaching this, so the calculator shows them: the common denominator it chose, the equivalent fractions before the operation, the raw result, and the greatest common divisor it used to simplify. Division shows the reciprocal flip explicitly, since keep-change-flip is the step people forget.

    Key features of the Fraction Calculator

    Every step shown

    The common denominator chosen, the equivalent fractions, the raw result and the greatest common divisor used to simplify.

    Mixed numbers accepted

    Enter 2 3/4 directly instead of converting it to an improper fraction first.

    Three forms of the answer

    Lowest terms, mixed number and decimal, so it fits whatever the question asked for.

    The reciprocal flip made explicit

    Division shows the flip step, because keep-change-flip is the part people forget.

    Automatic simplification

    Results are reduced for you, with the divisor stated so the reduction is checkable.

    How to use the Fraction Calculator

    1. 1

      Enter the first fraction

      Type the numerator and denominator, plus a whole number if you are working with a mixed number.

    2. 2

      Choose an operation

      Pick add, subtract, multiply or divide.

    3. 3

      Enter the second fraction

      The answer updates as soon as both fractions are complete.

    4. 4

      Read the working

      The common denominator, the intermediate result and the simplification are listed below the answer.

    Frequently asked questions

    Convert both to a common denominator, add the numerators, then simplify. For 1/3 + 1/4 the common denominator is 12, giving 4/12 + 3/12 = 7/12. The calculator shows each of those steps.

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