Ratio Calculator
When you need to check ratio, the Ratio gives you a clear starting point. Enter one realistic example first, then compare another option if useful.
Simplified ratio
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Solve A:B = C:x—
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How it works
Simplify by dividing by the greatest common divisorHow to use the Ratio
Enter the requested values and start with one realistic example. Read the result together with its unit or label, then change one input at a time if you want to compare options.
Schools and universities may use different rules, weights or grade boundaries. Check the official course instructions.
Frequently Asked Questions
What does the Ratio Calculator do?
Simplify a ratio and solve a proportion A:B = C:x.
What information should I enter?
Use the input labels as a guide and enter figures from the same situation, time period and units wherever possible.
Can I use the result as an exact answer?
Treat it as an estimate or check unless the page and the rules that apply to you confirm otherwise. Rounding, fees and personal details can change the final result.