Add, subtract, multiply and divide fractions with instant simplification and step-by-step results, including mixed numbers.
Denominators cannot be zero. Results are always reduced to the simplest form.
Enter two fractions (numerator over denominator), pick an operation and the tool computes the result instantly, always reduced to its simplest form — with the decimal equivalent shown as well.
Real life is full of fractions pretending to be something else: cooking (double the ¾ cup), woodworking and sewing (add 5/8 + 3/16 of an inch), time (quarter past = ¼ of an hour) and sales (half of a third off). This calculator handles all four operations with automatic simplification and step-ready results.
Everything runs entirely in your browser. Nothing you type is ever sent to any server or stored.
Find a common denominator (multiply both denominators), convert the numerators, add them, then simplify. The tool does this for you.
The result is displayed as a mixed number when the numerator is larger than the denominator, e.g. 7/2 becomes 3 1/2.
Division by zero is undefined in mathematics, so the tool rejects it.
Yes — every result is reduced using the greatest common divisor.
Yes — multiply straight across, and divide by flipping the second fraction and multiplying.
Yes, completely free with no account.