Appendix C: Units and Conversions

Table of Basic and Derived SI Units

Some Derived SI Units
Quantity	Units	Symbol	Basic Units
Area	square meter		m ²
Volume	cubic meter		m ³
Frequency	Hertz, cycles per second	Hz	1/s
Density	kilogram per cubic meter		kg/m ³
Velocity	meter/sec		m/s
Angular velocity	radian/sec		rad/s
Acceleration	meter/second squared		m/s ²
Angular acceleration	radians per second square		rad/s ²
Volumetric flow rate	cubic meter per second		m ³/s
Mass flow rate	kg per second		kg/s
Force	Newton	N	kg-m/s ²
Surface Tension	Newton per meter	N/m	kg/s ²
Pressure, stress	Pascal (Newton per square meter)	Pa (N/m2) kg/m-s2
Dynamic viscosity	Newton-second per square meter	N-s/m ²	kg/m-s ²
Kinematic viscosity	meter squared per second		m ²/s
Work, energy	joule, newton-meter, watt-second	J, N-m, W-s	kg-m2/s2
Power	watt, joule per second	W, J/s	kg-m ²/s ³
Specific heat, gas constant	joule per kilogram degree	J/kg-K	m ²/s ²-K
Enthalpy	joule per kilogram	J/kg	m ²/s ²
Entropy	joule per kilogram degree	J/kg-K	m ²/s ²-K
Thermal conductivity	watt per meter degree	W/m-K	kg-m/s ³-K
Diffusion coefficient	meter squared per second		m ²/s
Electrical charge	coulomb	C	A-s
Electromotive force	volt

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