Fraction Calculator

Put 2 in the whole-number box, 1 over 2 in the fraction boxes. For negative mixed numbers, put the minus sign on the whole part (-2 ½ means -(2 + ½)). The calculator converts to improper fractions internally — 2 ½ becomes 5/2 — which is also the first step shown in the working.

Because dividing by a number is multiplying by its reciprocal — dividing by ½ asks 'how many halves fit?', which doubles things. Formally: (a/b) ÷ (c/d) = (a/b) × (d/c). The steps display shows this so the rule connects to the reason instead of being memorized blindly.

Because 0.333333 isn't 1/3 — it's 333333/1000000, a nearby but different number. Repeating decimals can't be typed exactly in finitely many digits. The converter is exact for what you actually enter; for known repeating decimals, the fraction is the more fundamental form to start from.

The greatest common divisor is the largest integer dividing both numerator and denominator; dividing both by it produces the unique lowest-terms form. 8/12 has GCD 4, giving 2/3. Answers not in lowest terms are marked wrong in most classrooms, which is why the tool always reduces and shows the divisor used.