Percentage Increase Calculator

Calculate increased value for percentage with Percentage Increase Calculator using the values that apply to your situation. Enter Original Value and Increase %, and the calculator uses those values to show increased value. Use it while working through percentage to compare the calculated answer with your own method. A value used as a denominator cannot be zero, so check the original, total or reference value if the calculator rejects the entry. You can recalculate as often as needed, which makes Percentage Increase Calculator useful for checking more than one percentage scenario on the same basis. Read the worked example on the Percentage Increase Calculator page if you want to check how the entered values lead to increased value before using your own figures.

How to use Percentage Increase Calculator

To use Percentage Increase Calculator, start with the values that apply to your percentage case. Enter the value for Original Value, then enter the value for Increase %. Run the calculation to see increased value, then compare the answer with the values you entered before using it. Make sure the reference or total value used for division is greater than zero. Before relying on an important answer, review the entered values once more so increased value reflects the situation you actually want to calculate. The worked example on the Percentage Increase Calculator page can help you confirm how the inputs should be entered before you calculate your own case.

Why use this tool?

Use Percentage Increase Calculator when percentage needs a clear numerical result from a specific maths rule. It can save time on repetitive arithmetic while still letting you see which values are being used and how the result is derived. Because the calculation is based on Original Value and Increase %, you can see which values need to change when you want to test another case. Because Percentage Increase Calculator focuses only on percentage, you can change one input at a time and see how that affects increased value without changing the basis of the comparison. This also makes Percentage Increase Calculator practical for checking more than one percentage option, because each run uses the same calculation and the same input definitions.

How the calculation works

Percentage Increase Calculator multiplies original value by one plus the increase percentage. Original Value and Increase % are the numerical values used by the formula, so they should all describe the same case you want to calculate. Because division by zero is undefined, the calculator will not produce a numerical answer when the denominator is zero. The result gives increased value from the stated mathematical rule, making it useful for checking your own working or comparing examples. When the answer matters, review the source values once more before relying on increased value, especially if one input was estimated.

Example

For example, enter Original Value = 100 and Increase % = 20. The calculated result is 120. This works by multiplying original value by one plus the increase percentage, which gives the displayed increased value.

Practical tip

For Percentage Increase Calculator, use the real values for Original Value and Increase % rather than rounded guesses when a small input change could affect the answer. Keep the same units and assumptions whenever you compare two results from this tool. For a close threshold or grade decision, keep extra decimal places during the calculation and round only according to the required rule. Keep the source values alongside increased value if you may need to check the calculation again later.