Fractions
Enter as a/b, a whole number, or a mixed number like 1 1/2.
Result
Result appears here.
Calculate with fractions: add, subtract, multiply, and divide, with results simplified automatically and shown as mixed numbers.
Enter as a/b, a whole number, or a mixed number like 1 1/2.
Result appears here.
Type proper fractions like 3/4, whole numbers like 2, mixed numbers like 1 1/2, or even decimals like 0.75. Negative values work too, so temperature-style or financial differences are fine.
Division by zero and zero denominators are caught with a clear message instead of a broken result.
Every result is simplified to lowest terms automatically using the greatest common divisor. You also get the mixed-number form for measurements and cooking, plus the decimal equivalent for calculators and spreadsheets.
All arithmetic uses exact integer math, so 1/3 + 1/3 + 1/3 comes out as exactly 1, not 0.999999.