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Ratio Calculator

Simplify ratios, find equivalent ratios, scale ratios up or down, and solve missing values in proportion equations. All calculations shown step by step.

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: Ratio Calculator
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Enter values and click Calculate

📚How to Use

  1. 1
    Enter your values

    Choose the calculation type. The third field appears only when needed.

  2. 2
    Click Calculate

    Press Calculate. All results appear instantly in your browser. No data is sent to any server.

  3. 3
    Review and save results

    See your complete results with all key figures. Use Copy or Download to save them for your records.

📊Quick Reference

OperationFormula
Mean (average)Sum / Count
MedianMiddle value (sorted)
ModeMost frequent value
RangeMax - Min

Frequently Asked Questions

What is a ratio?

A ratio compares two quantities. The ratio 3:2 means for every 3 of one thing there are 2 of another.

How do I simplify a ratio?

Find the GCD of both numbers and divide both by it. For 12:8, GCD is 4, giving simplified ratio 3:2.

How do I scale a ratio?

Multiply or divide both parts by the same number. The ratio 3:2 scaled by 4 becomes 12:8.

How do I find a missing value in a proportion?

In A:B = C:D, use cross-multiplication. If 3:4 = 9:?, then ? = (4x9)/3 = 12.

What is the difference between ratio and proportion?

A ratio compares two quantities (3:2). A proportion states that two ratios are equal (3:2 = 6:4).

How are ratios used in finance?

Common financial ratios include Price-to-Earnings, Debt-to-Equity, and Current Ratio.

How do I convert a ratio to a percentage?

For ratio 3:2, first part = 3/(3+2) = 60%, second part = 2/(3+2) = 40%.

What is a 1:1 ratio?

Both quantities are equal — one of each for every one of the other.