Mechanical Units of Measure - Metric & English

Here is a collection of some of the most often used mechanical units. Both SI (metric) and SAE (English) units are given. There are two fundamental types of units: base units and derived units. Base units include meter, foot, kilogram, second, etc. Derived units involve a combination of base units, such as square meter, kilometer/second, etc.

Name	SI Base Unit	Symbol	English Base Unit	Symbol
Length	meter	m	foot	ft
Area	square meter	m²	square foot	ft²
Volume	cubic meter	m³	cubic foot	ft³
Mass	kilogram	kg	pound mass	lb
Density	kilogram/cubic meter	kg/m³	pound/cubic foot	lb/ft³
Time	second	s	second	s
Speed	kilometer/second	km/s	foot/second	ft/s
Force	newton	N	pound-force	lbf
Pressure	pascal	P	pound/square foot	lb/ft²
Plane Angle	radian	rad	degree	°
Solid Angle	steradian	ster	square degree	deg²
Momentum	kilogram*meter/second	ρ	pound*foot/second	ρ
Torque	newton*meter	t	pound-force*foot	t
Young's modulus	pascal	E	pascal	E
Kinetic energy	joule	K	watt*second	K
Potential energy	joule	U	watt*second	U

Here is the NIST document entitled The International System of Units (SI) –Conversion Factors for General Use

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