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Free Online Fraction Calculator

This is a free calculator for adding, subtracting, multiplying, and dividing two fractions and/or mixed numbers. It is very simple to use!

How to use the calculator

  • Enter Fraction #1 into the first box below. Use the “/” between the numerator and denominator. E.g. for one third, enter "1/3."
  • Enter Fraction #2 into the second box.
  • If you are using mixed numbers, leave a single space between the whole number and fraction part.
    e.g. for two and three-fiths, enter "2 3/5"
  • Select add, subtract, multiply or divide and then click Calculate Fraction.

An online fraction calculator by helpingwithmath.com

This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 Canada License.


Do you need help with fractions?

These resources might help!

Free videos for learning fractions, part 1 (mixed numbers, equivalent fractions, addition, subtraction, comparing)

Free videos for learning fractions, part 2 (simplifying, multiplying, and dividing fractions; fractions to decimals; ratios and fractions).


Key to Fractions workbook series

Key to Fractions Workbooks

These workbooks by Key Curriculum Press feature a number of exercises to help your child learn about fractions. Book 1 teaches fraction concepts, Book 2 teaches multiplying and dividing, Book 3 teaches adding and subtracting, and Book 4 teaches mixed numbers. Each book has a practice test at the end.

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