Fraction Calculator

The Fraction Calculator is a tool that performs the four basic operations - addition, subtraction, multiplication, and division - on fractions and returns the answer reduced to its simplest form. Enter two values, pick an operation, and get back the reduced fraction, its mixed-number form, its decimal value, and the step-by-step working that shows exactly how the answer was reached.

It accepts more than plain fractions. Each input can be a whole number like 5, a simple fraction like 3/4, a mixed number like 1 1/2, or a decimal like 0.75, and the calculator normalizes them all before doing the arithmetic. That means you can add a mixed number to a decimal, or divide a whole number by a fraction, without converting anything by hand first.

Every answer also comes back as a decimal, so it works as a fraction as decimal calculator: 3/8 + 1/4 is 5/8, or 0.625. It is a fraction calculator with whole numbers too, since a plain 5 is read as 5/1, and when a result divides evenly it is shown as a whole number: 3/4 × 8 returns 6, not 24/4. To turn a single fraction into a decimal, enter it as the first value and multiply by 1. The decimal is displayed to six places while the fraction itself stays exact.

Everything runs 100% in your browser with exact integer arithmetic, so results are precise rather than rounded - no floating-point drift, no data sent to a server, and it keeps working offline once the page has loaded. It is built for homework checking, recipe scaling, woodworking and sewing measurements, and any moment you need a fraction answer you can trust.

Fractions are handled as exact integer pairs rather than converted to decimals, which matters more than it sounds. A third has no exact decimal form, so a calculator working in floating point gives 0.3333 and accumulates error across a chain of operations, while adding a third to two thirds here returns exactly one. That is why the working can be shown step by step: every intermediate value is a real fraction rather than a rounded approximation. Results are reduced to lowest terms automatically using the greatest common divisor, and improper results are offered as mixed numbers, since 7/3 and 2 1/3 are the same value and different audiences expect different forms. Division by a zero numerator is rejected rather than returning infinity.