How do you add fractions with different denominators?

Find a common denominator by multiplying the denominators, convert each fraction, then add the numerators. Finally, simplify by dividing by the GCD.

How do you simplify a fraction?

Divide both the numerator and denominator by their Greatest Common Factor (GCF). For example, 8/12 simplifies to 2/3 because the GCF of 8 and 12 is 4.

Can this calculator handle negative fractions?

Yes. Enter a negative number in the numerator field and the calculator will correctly handle negative fractions in all four operations.

How do you multiply two fractions?

Multiply the numerators together and the denominators together, then simplify. For example, 2/3 × 3/4 = 6/12 = 1/2.

What does it mean for a fraction to be in its simplest form?

A fraction is in simplest (or lowest) form when the numerator and denominator share no common factors other than 1 — meaning their GCF is 1.

Math

↵ to calculate

Fraction Calculator — Add, Subtract, Multiply & Divide

Add, subtract, multiply, and divide fractions. Get results as simplified fractions and decimals.

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How to use this calculator

👉 Fill in the boxes below and your answer appears instantly — no maths needed, we do it all for you! 🎉

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In plain English — what does this do?

🍕 Cut a pizza into 4 pieces. If you eat 1 piece, you had 1/4 of the pizza. A fraction just means a part of something. Type in your numbers and this tool works it out for you!

📌 Direct Answer & Summary

A fraction calculator lets you add, subtract, multiply, and divide fractions and mixed numbers. It automatically simplifies results to their lowest terms and also shows the decimal equivalent, making it useful for math homework, cooking, and engineering calculations.

What is Fraction Calculator — Add, Subtract, Multiply & Divide?

How to use it

1️⃣ Select the operation (+, −, ×, ÷) using the buttons at the top.
2️⃣ Enter the numerator and denominator for Fraction A.
3️⃣ Enter the numerator and denominator for Fraction B.
4️⃣ The simplified result and its decimal equivalent appear instantly.

Formula

Addition: (a/b) + (c/d) = (ad + bc) / bd. Subtraction: (a/b) - (c/d) = (ad - bc) / bd. Multiplication: (a/b) × (c/d) = ac / bd. Division: (a/b) ÷ (c/d) = ad / bc. All results are reduced using the GCD.

💡 See it in action — a real example

To add 1/2 and 1/3, the calculator finds a common denominator: (3 + 2) / 6 = 5/6 ≈ 0.833333. To divide 3/4 by 2/5, multiply by the reciprocal: (3 × 5) / (4 × 2) = 15/8 = 1.875.

❓ Common questions

How do you add fractions with different denominators?: Find a common denominator by multiplying the denominators, convert each fraction, then add the numerators. Finally, simplify by dividing by the GCD.
How do you simplify a fraction?: Divide both the numerator and denominator by their Greatest Common Factor (GCF). For example, 8/12 simplifies to 2/3 because the GCF of 8 and 12 is 4.
Can this calculator handle negative fractions?: Yes. Enter a negative number in the numerator field and the calculator will correctly handle negative fractions in all four operations.
How do you multiply two fractions?: Multiply the numerators together and the denominators together, then simplify. For example, 2/3 × 3/4 = 6/12 = 1/2.
What does it mean for a fraction to be in its simplest form?: A fraction is in simplest (or lowest) form when the numerator and denominator share no common factors other than 1 — meaning their GCF is 1.

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