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Fraction Calculator

Calculate with fractions and mixed numbers.

Use the Fraction Calculator tool

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What this fraction calculator does

Fraction Calculator takes two fractions or mixed numbers, applies the chosen operation and returns a simplified result with its decimal equivalent. Inputs like 3/4, 1 1/2 and 0.75 are accepted, and a second converter turns a decimal back into a fraction.

Results are always reduced to lowest terms. Division by zero is reported instead of returning infinity. Decimal-to-fraction conversion uses the decimal you type, so a rounded value produces a fraction that matches the rounding rather than the original number.

Why use it

  • Check homework without simplifying by hand.
  • Work with mixed numbers without converting manually.
  • Turn a decimal measurement back into a usable fraction.

How to use it

  1. 1Enter both fractions or mixed numbers.
  2. 2Pick add, subtract, multiply or divide.
  3. 3Read the simplified fraction and decimal.
  4. 4Use the converter for decimal-to-fraction work.

Worked examples

Addition

Input

3/4 + 5/6

Output

19/12, or 1 7/12, with a decimal of about 1.5833.

Mixed numbers

Input

1 1/2 × 2/3

Output

1, shown as a whole number.

Common mistakes

  • Adding numerators and denominators straight across.
  • Forgetting to convert mixed numbers before multiplying or dividing.
  • Using a rounded decimal and expecting an exact original fraction.

Frequently asked questions

Does it simplify the answer?
Yes. The result is reduced to lowest terms.
Can I enter a whole number?
Yes. Enter it as 5 or 5/1.
What happens with division by zero?
The tool reports that the calculation is undefined instead of returning a number.
Is there a step-by-step solution?
No. It shows the result and decimal, not the working.

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