Fraction Calculator — Add, Subtract, Multiply, Divide Fractions Free

To add fractions, find a common denominator by multiplying both denominators. Then add the numerators. The result is automatically simplified to its lowest terms.

A mixed number combines a whole number and a proper fraction, e.g. 1 and 1/2. The calculator shows the mixed number form when the result is an improper fraction.

To divide fractions, multiply by the reciprocal of the second fraction. For example, 1/2 ÷ 1/3 = 1/2 × 3/1 = 3/2.

Yes. All results are automatically reduced to their simplest form using the GCD (Greatest Common Divisor) algorithm.

Yes. All calculations are done locally in JavaScript. Nothing is sent to any server.

Dividing by a fraction is the same as multiplying by its reciprocal. For example, 1/2 / 1/3 = 1/2 x 3/1 = 3/2.

An improper fraction has a numerator larger than its denominator (e.g. 5/3). It can also be written as a mixed number: 1 and 2/3.

Yes. All results are divided by the GCD of the numerator and denominator to produce the simplest form.