Ratio Calculator
Solve proportions and simplify ratios instantly.
Free Online Ratio Calculator & Proportion Solver
Solve complex ratio problems, check proportions, and simplify mathematical ratios instantly with our Ratio Calculator. Whether you are a student solving for 'X', a designer scaling an image, or a chef adjusting a recipe, this tool handles the math for you.
How to use the Ratio Calculator:
- Proportion Solver: Enter any three values (A, B, C, or D) into the equation A : B = C : D. The tool will automatically calculate the missing fourth value.
- Ratio Simplifier: Type in a ratio like '1920 : 1080' to see it reduced to its simplest integer form (16 : 9).
What is a proportion?
A proportion is a statement that two ratios are equal. It is often written as A/B = C/D. This concept is fundamental in geometry (similar shapes), chemistry (mixing solutions), and everyday life (scaling recipes). Our tool solves these cross-multiplication problems instantly, ensuring accuracy for homework or professional projects.
Why simplifying ratios is useful
Simplified ratios are easier to understand and work with. For example, a screen resolution of 3840 x 2160 is hard to visualise, but its simplified aspect ratio of 16:9 is a universal standard. Our simplifier finds the Greatest Common Divisor (GCD) to reduce large numbers into their most basic relationship.