Ratio to Percentage Calculator
Convert any mathematical ratio into a clean percentage.
Enter your values and click Calculate
How It Works
The calculator treats the ratio A:B as the fraction A ÷ B. The first number (A) is divided by the second number (B) to produce the decimal representation. That decimal is then multiplied by 100 to produce the percentage. In parallel, the greatest common divisor (GCD) of A and B is found using the Euclidean algorithm — repeatedly taking the remainder of dividing the two values until zero — and both numbers are then divided by the GCD to display the simplified ratio. This gives you three equivalent representations of the same relationship in a single calculation: a simplified ratio in lowest terms, its exact decimal form, and the corresponding percentage. A percentage above 100% simply means A is larger than B, which is mathematically valid and common when comparing growth, performance, or any quantity where the part exceeds the whole.