The Ratio Calculator is a simple online tool that helps you quickly simplify ratios and compare two numbers in their lowest form. Just enter any two positive numbers, and the calculator instantly reduces them to the simplest ratio using the greatest common divisor (GCD). This tool is especially useful for students, teachers, and anyone working with fractions, proportions, or everyday comparisons. Whether you need to simplify a recipe ratio, solve a math problem, or understand proportions in real life, this ratio calculator provides fast and accurate results on both desktop and mobile devices.