Base Dimensions and Unit Names

Units > Base Dimensions and Unit Names

The following table lists the base dimensions in PTC Mathcad, and it gives an example of a unit for each dimension:

Dimension	Example Unit
Current	Ampere (A)
Length	Meter (m)
Luminous intensity	Candela (cd)
Mass	Kilogram (kg)
Money	Dollar ($)
Substance	Mole (mol)
Temperature	Kelvin (K)
Time	Second (s)

For some engineering units such as cal and BTU, PTC Mathcad adopts one common definition for the unit name but allows you to insert one of several alternative unit names in your results, corresponding to alternative definitions of that unit. In the case of horsepower, for example, PTC Mathcad uses the UK definition of the unit hp but gives you several variants, such as water horsepower, metric horsepower, boiler horsepower, and electric horsepower.

Additional Information

• The Kelvin is the default temperature unit in PTC Mathcad.

• Unlike the degree Fahrenheit and degree Celsius, the Kelvin is not referred to as a "degree", nor is it typeset with a degree symbol; that is, it is written K and not °K.