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BASIC & DERIVED SI UNITS



BASIC UNITS
DIMENSION				UNIT			SYMBOL
Length meter m
Mass kilogram kg
Time second s
Electric current ampere A
Temperature, thermodynamic kelvin K
Amount of matter mole mol
Angle radian rad
Solid angle steradian sr
Luminous intensity candela cd

SOME DERIVED SI UNITS
QUANTITY			UNITS				SYMBOL		BASIC UNITS
Area square meter m2
Volume cubic meter m3
Frequency Hertz, cycles per second Hz 1/s
Density kilogram per cubic meter kg/m3
Velocity meter/sec m/s
Angular velocity radian/sec rad/s
Acceleration meter/second squared m/s2
Angular acceleration radians per second square rad/s2
Volumetric flow rate cubic meter per second m3/s
Mass flow rate kg per second kg/s
Force Newton N kg-m/s2
Surface Tension Newton per meter N/m kg/s2
Pressure, stress Pascal (Newton per square meter) Pa (N/m2) kg/m-s2
Dynamic viscosity Newton-second per square meter N-s/m kg/m-s
Kinematic viscosity meter squared per second m2/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-m2/s3
Specific heat, gas constant joule per kilogram degree J/kg-K m2/s2-K
Enthalpy joule per kilogram J/kg m2/s2
Entropy joule per kilogram degree J/kg-K m2/s2-K
Thermal conductivity watt per meter degree W/m-K kg-m/s3-K
Diffusion coefficient meter squared per second m2/s
Electrical charge coulomb C A-s
Electromotive force volt V kg-m2/A-s3
Electric field strength volt per meter V/m kg-m/A-s3
Electric resistance ohm ohm kg-m2/A2-s3
Electric Conductivity amperes per volt meter A/V-m A2-s3/kg-m3
Electric capacitance farad F A2-s4/kg-m2
Magnetic flux Weber Wb kg-m2/s2-A
Inductance henry H kg-m2/s2-A2
Magnetic flux density tesla T kg/s2-A

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Compiled by Nahum Gat, Ph.D. Comments and corrections will be appreciated. Please address correspondence to nahum@oksi.com