Calculate with fractions — add, subtract, multiply, divide, simplify, and convert decimals to fractions
Yes, PivaBox Fraction Calculator is completely free. All calculations run locally in your browser — no data is sent to any server.
We use the Euclidean algorithm to find the Greatest Common Divisor (GCD) of the numerator and denominator, then divide both by the GCD. This guarantees the simplest form of the fraction.
The decimal to fraction converter handles terminating decimals exactly. For repeating decimals (like 0.333...), you can enter them as fractions directly (e.g., 1/3) to get the simplified result.