Fraction Calculator

Add, subtract, multiply and divide fractions, with the answer reduced to lowest terms and shown as a decimal.

Fraction calculator

First fraction

Operation

Second fraction

Result: —

Decimal: —

The answer is reduced to lowest terms with the greatest common divisor.

Common questions about the free online fraction calculator.

Enter both fractions and choose the plus sign. The tool finds a common denominator, adds the numerators and reduces the answer.

Enter the fractions and choose the minus sign. The denominators are matched first and the result is reduced to lowest terms.

Choose the times sign, then multiply the numerators together and the denominators together before reducing the answer.

Choose the division sign. The second fraction is flipped and multiplied by the first, which gives the correct quotient.

The numerator and denominator are divided by their greatest common divisor, so the fraction is written in its simplest form.

Yes. If the denominator divides exactly into the numerator, the result is shown as a whole number such as 2 instead of 2/1.

Yes. You can enter negative numerators or denominators, and the sign of the answer is handled correctly.

Yes. The result panel shows both the reduced fraction and its decimal equivalent rounded to six decimal places.

No. All calculations run locally in your browser, so the numbers you enter never leave your device.

Last updated: October 10, 2026