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Percent calculator

Value 1DifferenceValue 2
% of value 1
% of value 1
% of value 2
% of value 2


The results have been rounded to significant digits.

This is a calculator to perform simple percent calculations. The left column specifies one value (value 1), the right column specifies another value (value 2), the column in the middle gives details of the difference with

value_1 + difference = value_2

The row in the middle contains the fields for the real amounts of value 1, value 2 and the difference. The top row shows for the prevailing value how many percent of value 1 this is. The lower row shows the corresponding details related to value 2.

Usage: Type two of the seven values into their corresponding fields (no matter which order). After a click on any free space of the window or the "calculate" button, the calculation is performed. Read the results.
The calculation is done using the two values changed last as input. After the calculation these fields are coloured in light green while the calculated results are coloured in light pink. For another calculation with only one changed input value, just type the changed value. For another calculation with completely new values, click on the "reset" button before input.

Example: Some goods cost 89.90 € and the price includes 19 % value added tax. Since the price is the sum of the net-price and the tax amount, type "89.90" into the field "b". The value added tax is calculated relative to the net price. Therefore, type "19" into the field "% of value 1" on top of the mid column and click on any empty space of the window or the "calculate" button. Now you may read the results: The net price "a" is 75.55 €, the amount of value added tax is 14.35 € ("diff"). The net price is lower by 15.97 % ("% of value 2 "in the mid column). This corresponds to 84.03 % of the gross price (lower field in the left column), while the gross price is 119 % of the net price (upper field in the right column).

- Large and small numbers are written exponentially. As example 2.3e5 = 2.3⋅105 = 230000 or 4.5e-5 = 4.5⋅10-5 = 0.000045.
- There is no warranty for the conversion. Cactus2000 is not responsible for damage of any kind caused by wrong results.
- Please send an email if you have suggestions or if you would like to see more conversions to be included.

© Bernd Krüger, 31.07.2006

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Bernd Krüger, 2020