Fraction Calculator
Add, subtract, multiply, and divide fractions. Get simplified results as fractions and decimals instantly.
How It Works
This calculator performs arithmetic on two fractions:
- Addition/Subtraction — Cross-multiplies to find a common denominator, then adds or subtracts the numerators.
- Multiplication — Multiplies numerator × numerator and denominator × denominator.
- Division — Multiplies by the reciprocal of the second fraction.
- All results are automatically simplified using the greatest common divisor (GCD).
Frequently Asked Questions
How do you add fractions with different denominators?
Find a common denominator by multiplying the denominators together (or using the LCD). Multiply each numerator by the other fraction's denominator, then add the numerators and simplify.
How do you multiply fractions?
Multiply the numerators together and the denominators together, then simplify. For example, 2/3 × 4/5 = 8/15.
How do you divide fractions?
Multiply the first fraction by the reciprocal of the second. For example, 2/3 ÷ 4/5 = 2/3 × 5/4 = 10/12 = 5/6.