Fraction Calculator

Add, subtract, multiply, and divide fractions. Results are automatically simplified.

Simplify a Fraction

Convert Decimal to Fraction

How Fraction Operations Work

  • Addition/Subtraction: Find common denominator, then add/subtract numerators
  • Multiplication: Multiply numerators, multiply denominators
  • Division: Multiply by the reciprocal of the second fraction
  • Simplification: Divide both parts by their greatest common divisor (GCD)

Example

1/2 + 1/3:

FAQ

How do I add fractions with different denominators?
Find the least common denominator (LCD), convert each fraction to have that denominator, then add the numerators. Example: 1/2 + 1/3 = 3/6 + 2/6 = 5/6.
How do I multiply fractions?
Multiply the numerators together and the denominators together. Example: 2/3 × 3/4 = 6/12 = 1/2.
How do I divide fractions?
Flip the second fraction (reciprocal) and multiply. Example: 2/3 ÷ 1/2 = 2/3 × 2/1 = 4/3.