Calculator category
Percentages & Ratios Calculators
Compare quantities, calculate changes, and solve proportional relationships. Move between percentages, changes, ratios, proportions, rates, margins, and markups without mixing their different reference values.
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Percentages & Ratios topics
Select a topic to reveal its calculators. Multiple topics can remain open at the same time.Percentages & RatiosCompare quantities, calculate changes, and solve proportional relationships.26 available
- Percentage CalculatorSolve for a percentage, part, or whole from two known values.Open calculator
- Percentage Change CalculatorMeasure signed change relative to a nonzero original value.Open calculator
- Percentage Difference CalculatorCompare two values symmetrically using their mean magnitude.Open calculator
- Percent Error CalculatorCompare an estimate with a nonzero accepted reference.Open calculator
- Percentage Increase CalculatorIncrease a value by a percentage and show the change amount.Open calculator
- Percentage Decrease CalculatorDecrease a value by a percentage and show the change amount.Open calculator
- Average Percentage CalculatorCalculate an equal-weight or weighted percentage average.Open calculator
- Percentage Point Difference CalculatorCompare two percentages in signed and absolute percentage points.Open calculator
- Percentage of a Percentage CalculatorApply one percentage to another percentage.Open calculator
- Reverse Percentage CalculatorRecover an original value after a percentage increase or decrease.Open calculator
- Relative Change CalculatorExpress signed change as a ratio and a percentage.Open calculator
- Percent to Goal CalculatorMeasure progress toward a positive goal and the remaining amount.Open calculator
- Time Percentage CalculatorExpress elapsed time as a percentage of a total in the same unit.Open calculator
- Markup Percentage CalculatorMeasure markup relative to cost.Open calculator
- Margin Percentage CalculatorMeasure profit margin relative to revenue.Open calculator
- Fraction to Percent CalculatorConvert an exact fraction into a percentage.Open calculator
- Decimal to Percent CalculatorConvert a decimal value into a percentage.Open calculator
- Ratio CalculatorSimplify a two- or multi-part decimal ratio.Open calculator
- Proportion CalculatorSolve one missing value in two equivalent ratios.Open calculator
- Rule of Three CalculatorSolve direct or inverse proportional relationships.Open calculator
- Cross Multiplication CalculatorSolve a proportion and show its equal cross-products.Open calculator
- Equivalent Ratio CalculatorScale a ratio by a positive factor.Open calculator
- Unit Rate CalculatorConvert a quantity into an amount per one unit.Open calculator
- Ratio to Percentage CalculatorConvert a ratio using a selected relative or share interpretation.Open calculator
- Percentage to Ratio CalculatorConvert a percentage into a part-to-whole or part-to-remainder ratio.Open calculator
- Divide in a Ratio CalculatorSplit a total across two or more positive ratio parts.Open calculator