Ratio Calculator
Simplify ratios and solve for a missing value.
Result
Results are estimates for general information only and are not professional advice.
Working with ratios
A ratio compares two quantities. This calculator reduces a ratio to its simplest form by dividing both parts by their greatest common divisor, and shows the equivalent decimal. Ratios are used in cooking, maps, finance and design.
Frequently Asked Questions
What is the Ratio Calculator?
Simplify ratios and solve for a missing value. It runs instantly in your browser and is completely free to use.
What do I need to enter to use the Ratio Calculator?
The Ratio Calculator asks for the following values (2): A, B. Fill them in and the result appears immediately — the calculation runs on your own device, so nothing you type is sent to a server.
How accurate is the Ratio Calculator?
The Ratio Calculator uses standard, widely-accepted formulas, so its figures are reliable estimates for everyday planning. They are not a substitute for advice from a qualified professional.
Is the Ratio Calculator free, and do I need an account?
Yes. The Ratio Calculator — and every other calculator on Calculatis — is completely free, with no registration, no download and no limit on how often you use it.