Math calculator

Fraction Calculator

Free Fraction calculator. Add, subtract, multiply, or divide two fractions and simplify the result. Use our free online calculator.

Last updated August 24, 2026

Math calculator

Fraction Calculator

Add, subtract, multiply, or divide two fractions and simplify the result.

How this calculator works

This calculator adds, subtracts, multiplies, and divides fractions, then simplifies the result. Enter two fractions and select an operation to see the simplified result in fraction and decimal form. Use it for math problems, recipe scaling, and construction measurements. The key inputs are two fractions and the operation. The output is the simplified fraction and decimal value. Real-world applications include education, cooking, carpentry, and everyday fraction math. The calculator applies fraction arithmetic, then simplifies the result using the greatest common divisor. The denominator cannot be zero because division by zero is undefined. This calculator expects simple fractions, so convert mixed numbers to improper fractions before entering them. The result is reduced when possible and also shown as a decimal for convenience.

Methodology

The calculator applies fraction arithmetic, then simplifies the result using the greatest common divisor.

Examples

  • Add or subtract fractions.
  • Multiply or divide fractions.
  • Simplify a fraction result.

Common questions

Why can't the denominator be zero?

Division by zero is undefined, so any fraction with a zero denominator has no valid numeric value.

Does the calculator simplify results?

Yes. It reduces the fraction when possible and also shows the decimal value.

Can I use mixed numbers?

This calculator expects simple fractions. Convert mixed numbers to improper fractions before entering them.