CalcHub
Fraction Calculator
Add, subtract, multiply and divide fractions.
a/b + c/d = (ad + cb)/bd · a/b − c/d = (ad − cb)/bd · a/b × c/d = ac/bd · a/b ÷ c/d = ad/bc, then simplified with the GCD.
- What is a mixed number?
- A fraction written as a whole number plus a proper fraction, e.g. 7/4 = 1 ¾. Results are automatically reduced and converted to mixed form.
- Can fractions be negative?
- Yes — the sign is carried through the calculation and displayed as a minus prefix on the result.
- What happens if the denominator is zero?
- Division by zero is undefined, so the calculator shows an error instead of a result.
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