Book 1 · Everyday Math

Fraction Calculator

Add, subtract, multiply, or divide two fractions — with a whole-number field for mixed numbers. Result comes back reduced and as a mixed number.

Home › Calculators › Fractions

Fill in both fractions, pick an operator, and press Calculate.
From the book — Chapter 2. Mixed numbers get turned into improper fractions first (1 ½ becomes 3/2). To add or subtract, find a common denominator; to multiply, go straight across; to divide, flip the second fraction and multiply. Then reduce by dividing both parts by their greatest common divisor.

Denominators must be non-zero. Negative wholes flip the sign of the whole fraction. Everything stays in your browser.