Fraction Calculator

Fractions that appear in recipes, measurements, financial ratios, and exam questions often contain common factors that can be cancelled to produce a cleaner, simpler form. Reducing 48/64 to 3/4 makes the value immediately recognisable and easier to work with. This calculator simplifies any fraction to its lowest terms using the Greatest Common Divisor, and simultaneously returns the decimal and percentage equivalents — giving you all three representations in a single step. It handles proper fractions, improper fractions, and whole-number results. Use it whenever you encounter an unsimplified fraction and need its cleanest form or its decimal value.

The Euclidean algorithm finds the Greatest Common Divisor (GCD) of the numerator and denominator: repeatedly divide the larger by the smaller and take the remainder until the remainder is zero; the last non-zero remainder is the GCD. Both numerator and denominator are then divided by the GCD to produce the simplified fraction. The decimal is computed as Numerator ÷ Denominator. The percentage is Decimal × 100. When the simplified denominator is 1, the output is displayed as a whole number rather than a fraction with denominator 1.