Fraction Calculator
Add, subtract, multiply or divide fractions and mixed numbers, reduced automatically.
Fraction Calculator
Add, subtract, multiply or divide fractions and mixed numbers, reduced automatically.
Starts in your browser. Instructions are below.
How to use Fraction Calculator
- 01Enter the first fraction's whole number, numerator and denominator.
- 02Choose the operation (+, -, x or ÷) and enter the second fraction the same way.
- 03Read the result as a reduced fraction, a mixed number and a decimal.
About Fraction Calculator
This fraction calculator adds, subtracts, multiplies and divides fractions and mixed numbers. Adding and subtracting need a common denominator: the calculator cross-multiplies so both fractions share one, combines the numerators, then reduces by the greatest common divisor. Multiplying is simpler, numerators together and denominators together, and dividing multiplies by the reciprocal of the second fraction.
Mixed numbers are converted to improper fractions first, so three and a half becomes seven halves before the operation runs. For example, 1/2 + 1/3 becomes 3/6 + 2/6 = 5/6. Every result is reduced automatically, which is why an answer like 5/10 comes back as 1/2.
Frequently asked questions
- Can I use mixed numbers?
- Yes, enter the whole number alongside the numerator and denominator and it is converted automatically before the calculation.
- Why is my answer different from what I expected?
- Results are always fully reduced, so 6/8 is shown as 3/4. The decimal and mixed-number views should still match your expected value.
- What about dividing by zero?
- A zero denominator or dividing by a fraction equal to zero is flagged with an error message instead of a wrong answer.
- Does it show the decimal equivalent?
- Yes, alongside the reduced fraction and mixed number, the calculator shows the result as a decimal rounded to four places.
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