Worked example
Enter 150:100 to simplify the relationship to 3:2 and use the comparison result consistently.
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Proportions
Ratio Calculator
Simplify a two-part ratio and view its decimal relationship and proportional shares.
Enter your values
Result
Detailed breakdown
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Your result will appear here
Complete the fields and select Calculate to see a detailed answer.
Formula
How it is calculated
Simplified Ratio = A ÷ GCD(A, B) : B ÷ GCD(A, B)
Frequently asked questions
What is a ratio?
A ratio compares two quantities by division and is commonly written as A:B.
How is a ratio simplified?
Both parts are divided by their greatest common divisor after decimal places are normalized.
Can ratios contain decimals?
Yes. The calculator scales decimal values before simplifying them.
Practical guidance
Use the Ratio Calculator with confidence
Simplify and compare ratios. Review the example and limitations below before using the result for an important decision.
Assumptions and limits
The result follows the displayed mathematical operation and browser precision. Check units, signs, rounding, and the intended percentage base.
How to read the result
Calculations run from the values you enter using the formula described on this page. Inputs are processed in your browser and results are rounded for display.
Calculation methodology
Read our calculation methodology Educational estimate only. Verify regulated financial, tax, employment, or legal decisions with an official source or qualified professional.