Appendix J Conversion Factors and Constants

SI Units and Conversion Factors

Table J-l shows the basic units and some derived units of the International System of Units (SI).1 The main advantage of this system is internal coherence; i.e., no conversion factors are needed when using basic or derived SI units.

1 A guide for using the SI system is given by B. N. Taylor, 1995, MIST Special Publication 811, Washington: U.S. Government Printing Office.

Table width="100%" J-1 Basic and derived S! units.


In SI, mass is expressed in kilograms, force in newtons, and pressure in newtons per square meter (pascal). Usually, a prefix is attached to SI ...

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