Fraction Calculator

Add, subtract, multiply and divide fractions — always simplified.

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Tip: to just simplify a fraction, enter it on the left and add 0/1 — for example 8/12 + 0/1 = 2/3.

Result (simplified)
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Mixed number
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Decimal
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Percentage
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Before simplifying
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➗ How to Use This Fraction Calculator

  1. 1.Enter the first fraction. Numerator on top, denominator below — for example 1 over 2.
  2. 2.Pick the operation. Add, subtract, multiply or divide.
  3. 3.Enter the second fraction. The answer updates instantly as you type — no equals button needed.
  4. 4.Read every form of the answer. Simplified fraction, mixed number, decimal and percentage — plus the unsimplified result so you can check your work.
  5. 5.Negative numbers work too. Use a minus sign on a numerator for negative fractions; the sign is cleaned up automatically.

❓ FAQ

How do you add fractions?

Give them a common denominator first: multiply each numerator and denominator so both denominators match, then add the numerators. For example, 1/2 + 3/4 becomes 2/4 + 3/4 = 5/4. This calculator does the matching and simplifying for you.

How do you simplify a fraction?

Divide the top and bottom by their greatest common divisor (GCD). For example, 8/12 simplifies to 2/3 because both 8 and 12 divide by 4. Every result here is automatically reduced to lowest terms.

What is a mixed number?

A mixed number combines a whole number with a fraction, like 1 1/4. It is the same value as the improper fraction 5/4 — just easier to picture. This tool shows the fraction, the mixed number and the decimal for every result.

Can this calculator divide fractions?

Yes. Dividing by a fraction means multiplying by its flip (reciprocal): 1/2 ÷ 3/4 = 1/2 × 4/3 = 4/6 = 2/3. Choose ÷, enter both fractions, and the result appears instantly.

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