Using the following example, we will step through the process for converting from a given set of units to a desired set of units.

Convert 795 m to ft.

If an equivalent relationship between the given units and the desired units cannot be found in the conversion tables, multiple conversion factors must be used. The conversion is performed in several steps until the measurement is in the desired units. The given measurement must be multiplied by each conversion factor (ratio). After the common units have been canceled out, the answer will be in the desired units.

Example: Convert 2.91 sq miles to sq meters.

It is possible to perform all of the conversions in a single equation as long as all of the appropriate conversion factors are included.

Example:

A Swedish firm is producing a valve that is to be used by an American supplier. The Swedish firm uses the MKS system for all machining. To conform with the MKS system, how will the following measurements be listed?

Solution:

Valve stem

Examples of common conversion factors are shown in Table 8.