How do I add fractions with different denominators?

Find a common denominator (usually the LCM), convert each fraction, then add numerators. For 1/2 + 1/3: common denominator is 6, so 3/6 + 2/6 = 5/6. The calculator does this automatically.

How do I multiply fractions?

Multiply numerators together and denominators together. For 2/3 × 3/4: (2×3)/(3×4) = 6/12 = 1/2. Always simplify the result.

How do I divide fractions?

Multiply by the reciprocal (flip the second fraction). For 1/2 ÷ 1/4: 1/2 × 4/1 = 4/2 = 2. The calculator handles this automatically.

What does simplifying a fraction mean?

Simplifying means reducing to lowest terms by dividing both numerator and denominator by their greatest common divisor (GCD). For 12/16, GCD is 4, so 12÷4 / 16÷4 = 3/4.

Can I use improper fractions?

Yes. Improper fractions (numerator > denominator) work fine. For example, 7/4 = 1.75. The calculator doesn't convert to mixed numbers, but you can see the decimal equivalent.

Is my calculation data sent to a server?

No. All calculations happen entirely in your browser using JavaScript. Your fractions and results are never transmitted over the network.

Tools

Result

Simplified

Decimal

0.8333

Fraction Calculator — Add, Subtract, Multiply & Divide Fractions

Free fraction calculator for all fraction operations. Add, subtract, multiply, and divide fractions. Simplify fractions and find common denominators. All calculations run locally in your browser.

Features

✓Add two fractions with different denominators
✓Subtract fractions with automatic common denominator
✓Multiply fractions directly
✓Divide fractions by inverting and multiplying
✓Simplify fractions to lowest terms
✓Show decimal equivalent
✓Instant calculation as you type
✓Perfect for math homework and cooking
✓Handles improper fractions
✓All calculations run locally in your browser

How to Use

1Enter the first fraction (numerator and denominator).
2Select the operation (add, subtract, multiply, divide, or simplify).
3Enter the second fraction if needed.
4View the result as a fraction and decimal.
5See the simplified form automatically.

Frequently Asked Questions

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