Free online tool

Fraction Calculator

Add, subtract, multiply or divide two fractions and simplify the result.

Enter your values

First fraction

Second fraction

Result

Enter the values and choose Calculate.

Result
Decimal

How to use this tool

Work with exact fractions while also seeing the decimal value.

  1. Enter your values
  2. Calculate
  3. Copy · Share

Formula and method

a/b + c/d = (ad + bc) ÷ bd; every result is reduced by its greatest common divisor.

Worked example

1/2 + 1/3 = 5/6, or approximately 0.8333.

Frequently asked questions

Is this tool free and private?

Yes. It is free to use without an account, and the calculation runs in your browser.

Fraction Calculator

Add, subtract, multiply or divide two fractions and simplify the result.

Content basis and verification

· Calculations run in your browser. Check the formula and assumptions on this page, and confirm important financial, tax, medical or legal decisions against current official guidance.