Math & StatisticsFormula-based · Runs in your browser

Ratio Calculator

Simplify an integer ratio and optionally scale it from a new first value.

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Inputs

Enter the values you know. Optional fields may be left empty.

Local save controls below
Required
Required
Optional

Result

Updates as valid inputs change.

Calculated locally
Simplified ratio
Greatest common divisor
First ÷ second
First as percent of second
Matching second value

Saved locally, explained clearly

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Calculation steps

Follow what happened from the selected formula to the displayed answer.

Show substituted values and intermediate working
Calculate current inputs to see the working.
  1. 1

    Formula selected

    The calculator uses the following formula or method.

    Simplified ratio = (a ÷ GCD) : (b ÷ GCD)

  2. 2

    Values entered

    Your values are placed into the calculation.

    Enter values to see what is used in this step.

  3. 3

    Result calculated

    The formula or method produces the following result values.

    Results will appear after a successful calculation.

  4. 4

    Answer formatted

    Displayed values are rounded and formatted using each output’s configured precision.

Scenario comparison

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Recent calculations

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No local history for this calculator yet.

Data and privacy

How it works

Both integer values are divided by their greatest common divisor. An optional new first value scales the second value in the same proportion.

Input query strings and outputs

Use an input name in this page’s URL as ?name=value, and join additional inputs with &. Portable shared links may instead use the compact ?ac= state parameter.

Input query strings

3
  • ?a= First value

    Number · Required · Default: 12

  • ?b= Second value

    Number · Required · Default: 18

  • ?scaledA= New first value

    Number · Optional

Outputs

5
  • simplifiedRatio Simplified ratio

    Text · Primary output

  • greatestCommonDivisor Greatest common divisor

    Whole number

  • decimal First ÷ second

    Number

  • percent First as percent of second

    Percentage

  • scaledB Matching second value

    Number

Sources
  • No external reference is listed for this calculator. Its formula and variable definitions are shown above.
Limitations
  • Results depend on the selected method and input assumptions. Displayed decimals may be rounded; retain appropriate precision for later calculations.