Use this fraction calculator to perform the four basic operations on two fractions: addition, subtraction, multiplication and division. The tool automatically simplifies the result and also shows the decimal equivalent, which is useful for homework, classroom exercises and quick checks when working with rational numbers.
Find a common denominator: a/b + c/d = (a×d + c×b) / (b×d). Then simplify by dividing by the GCD. Example: 1/2 + 1/3 = (1×3 + 1×2) / (2×3) = 5/6.
Simplifying a fraction makes it easier to read, compare and use in later calculations. Two fractions can represent the same value, but the simplest form is usually the clearest one.
Add: a/b + c/d = (ad+bc)/bd | Subtract: a/b − c/d = (ad−bc)/bd | Multiply: a/b × c/d = ac/bd | Divide: a/b ÷ c/d = ad/bc | Simplify with GCD
Example: 1/2 + 1/3 = 3/6 + 2/6 = 5/6 ≈ 0.83333
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