SI units - PC Based Instrumentation and Control - page 458

Appendix B SI units

Fundamental units

Quantity Unit Symbol

Length Metre M

Mass Kilogram kg

Time Second s

Electric current Ampere A

Temperature Kelvin K

Energy Joule J

Electrical resistance Ohm

Luminous intensity Candela cd

Amount of substance Mole mol

Selected derived units

Quantity Unit Symbol

Electric charge Coulomb C

Capacitance Farad F

Inductance Henry H

Frequency Hertz Hz

Conductance Siemen S

Magnetic flux Weber Wb

Magnetic flux density Tesla T

Voltage (potential difference) Volt V

m 2 Area Square metre

m 3 Volume Cubic metre

Volume (fluid capacity) Litre l

Force Pascal Pa

m s − 1 Velocity Metre per second or m/s

m s − 2 or m/s 2 Acceleration Metre per second squared

kg m − 3 or kg/m 3 Density Kilogram per metre cubed