> Student Assistance Center
>> Science
>>> Quantities / Units

Physical Quantities and their Units


PHYSICAL QUANTITIES AND THEIR SI BASE UNITS

Following is the list of Physical Quantities and their SI Base Units and Symbols.

Physical QuantityUnitSymbol
lengthmeterm
masskilogramkg
timeseconds
electric currentampereA
thermodynamic temperaturekelvinK
amount of substancemolemol
luminous intensitycandelacd



SOME SI DERIVED UNITS

Physical QuantityUnitSymbol
areasquare meterm2
volumecubic meterm3
frequencyhertzHz
mass density (density)kilogram per cubic meterkg/m3
speed, velocitymeter per secondm/s
angular velocityradian per secondrad/s
accelerationmeter per second squaredm/s2
angular accelerationradian per second squaredrad/s2
forcenewtonN
pressurepascalPa
work, energy, quantity of heatjouleJ
powerwattW
quantity of electricitycoulombC
potential difference, electromotive forcevoltV
electric fieldvolt per meterV/m
electric resistanceohm
capacitancefaradF
magnetic fluxweberWb
inductancehenryH
magnetic fieldteslaT
entropyjoule per kelvinJ/K
specific heat capacityjoule per kilogram kelvinJ/(kg.K)
thermal conductivitywatt per meter kelvinW/(m.K)
radiant intensitywatt per steradianW/sr



THE SI SUPPLEMENTARY UNITS

Physical QuantityUnitSymbol
plane angleradianrad
solid anglesteradiansr