Fraction Calculator

Enter fractions below. Leave "Whole" blank for simple fractions.

Result

How to Calculate

1. Convert mixed numbers to improper fractions.
2. Find a common denominator.
3. Add or subtract the numerators.
4. Simplify the result.

Multiply numerators together and denominators together. Simplify if possible.

Multiply the first fraction by the reciprocal (flip) of the second fraction.

What is a mixed number? ▼

A mixed number consists of a whole number and a fraction, like 1 ½.

Why do I need a common denominator? ▼

When adding or subtracting, the "parts" of the whole must be the same size to be combined directly.