Calcpad version 3.0 already supports some non-metric units, that are commonly used in science, technology and engineering. A list of currently supported units is available in Units section of the User manual. More units can be easily appended in the next version. We will appreciate your suggestions very much.

Calcpad supports both Imperal and USCS system. Some of the units have slightly different values although their names are the same. You can select which system to use by switching the respective option in the program window (●Imperial/○US).

You can convert between metric and non-metric units. That is possible because both systems exist simultaneously inside the Calcpad core engine. You can also mix them in one and the same expression. Open Calcpad on your desktop or go to the online calculator and try the following examples:

2ft + 3in|cm

kg/lb

You will get the following answer in the output window:

2ft + 3in = 68.58cm

kg/lb = 2.204623

Converting temperatures is a little bit more tricky because the origins of the different temperature scales are not the same. For example: 0°C = 32°F. Because of that, it makes a difference whether you convert between absolute values or temperature differences. In the next post, we will discuss more about this and how this problem is solved in Calcpad.