Fraction Calculator

Add, subtract, multiply or divide two fractions — results shown simplified, as a mixed number and as a decimal.

How to Use This Calculator

Enter numerators and denominators (use negative numbers for negative fractions), pick an operation, and hit Calculate. Results are reduced to lowest terms automatically.

Frequently Asked Questions

What does "simplified" mean?

A fraction is simplified when the numerator and denominator share no common factor larger than 1 — e.g. 6/8 becomes 3/4.

How do I convert a fraction to a decimal?

Divide the numerator by the denominator. 3/4 ÷ 4 = 0.75.

What is a mixed number?

A whole number plus a fraction, like 1 1/4. It equals the same value as the improper fraction 5/4.

How do I divide fractions?

Keep the first fraction, flip the second, and multiply. (1/2) ÷ (1/4) = (1/2) × (4/1) = 2.

Practical Example

Add 1/2 + 1/4:

Common denominator 4 → 2/4 + 1/4 = 3/4
As a decimal: 3 ÷ 4 = 0.75
As a percentage: 75%

Multiplying 2/3 × 3/4 = 6/12 = 1/2.

What Your Results Mean

Result fraction — always simplified to lowest terms.
Mixed number — the same value shown as whole + fraction when applicable.
Decimal — the practical form for calculators and measurements.