The default Units environment does not accept any use of units. However, there are conversion routines that convert units.

Note: The convert/units routine converts temperature intervals. For example, 1 degree Celsius is converted to 1 kelvin.  For conversions of absolute temperatures, use convert/temperature.

These functions do not adversely affect the computation environment and are available to the user in every environment. Use only these functions if only simple conversions are required or system memory is a premium.  They should also be used in any programming environment after prototyping in the Natural or Standard environment.