Fraction Calculator
Add, subtract, multiply, and divide fractions. Results are automatically simplified to lowest terms.
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How to Add Fractions
a/b + c/d = (a×d + c×b) / (b×d) → simplify
1/2 + 1/3:
(1×3 + 1×2) / (2×3) = 5/6
(1×3 + 1×2) / (2×3) = 5/6
How to Subtract Fractions
a/b − c/d = (a×d − c×b) / (b×d) → simplify
How to Multiply Fractions
a/b × c/d = (a×c) / (b×d) → simplify
How to Divide Fractions
a/b ÷ c/d = a/b × d/c = (a×d) / (b×c)
FAQ
How do I simplify a fraction?
Divide the numerator and denominator by their GCF. For example, 6/8 → GCF(6,8) = 2 → 3/4.
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Last updated: 2026-08-08