½ Fraction Calculator
Add, subtract, multiply, and divide fractions. Shows step-by-step solution with simplification.
About the Fraction Calculator
This fraction calculator runs entirely in your browser. Enter two fractions, pick an operation (+, −, ×, ÷), then click Calculate to see the result with a step-by-step explanation. Nothing is uploaded — all math happens on your device.
How fractions are calculated
- Addition: (n₁ × d₂ + n₂ × d₁) / (d₁ × d₂)
- Subtraction: (n₁ × d₂ − n₂ × d₁) / (d₁ × d₂)
- Multiplication: (n₁ × n₂) / (d₁ × d₂)
- Division: (n₁ × d₂) / (d₁ × n₂)
After the operation, the result is simplified by dividing both numerator and denominator by their greatest common divisor (GCD).
How to use the calculator
- Enter the numerator and denominator of the first fraction.
- Select the operation (+, −, ×, ÷).
- Enter the numerator and denominator of the second fraction.
- Click Calculate to see the steps and the simplified result.
Frequently asked questions
What if a denominator is 0? Division by zero is undefined. The calculator will warn you if any denominator is 0.
Can I use negative numbers? Yes. The sign is handled automatically and the result is normalized.
Can I use decimals? Yes. The inputs accept decimal values, though the result will be displayed as a fraction in simplest form plus its decimal equivalent.
Does this tool save my data? No. All calculations happen locally in your browser.