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Fraction Calculator

Add, subtract, multiply and divide fractions.

Details

Results

Result -
Decimal -
Percentage -

Computed in your browser.

How it works

Addition and subtraction use a common denominator. Multiplication crosses straight across. Division flips the second fraction and multiplies. Every result reduces to lowest terms automatically.

Reduce: dividing top and bottom by their GCD gives the simplest form.

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Good to know

FAQs

How do I add fractions?

Find a common denominator, add numerators, then reduce.

How do I divide fractions?

Multiply by the reciprocal of the second fraction.

Can it convert to a percentage?

Yes. The result includes a decimal and percentage conversion.

Does it reduce automatically?

Yes. Every result reduces to lowest terms.

Negative fractions?

Supported - enter a negative numerator.