Fraction Calculator
Add, subtract, multiply and divide fractions. Result is simplified automatically.
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5
6
= 0.833333
Fraction arithmetic
Fractions represent parts of a whole. The numerator is how many parts you have; the denominator is how many equal parts the whole is divided into.
- a/b + c/d = (a×d + c×b) / (b×d)
- a/b × c/d = (a×c) / (b×d)
- a/b ÷ c/d = (a×d) / (b×c)
- Simplify: divide both by GCD
Formula / How it works
Add/Subtract: (a×d ± c×b)/(b×d) | Multiply: (a×c)/(b×d) | Divide: (a×d)/(b×c). Result auto-simplified using GCD.