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Units of measurement. Online converter
General
international system of units. SI
the SI prefixe
etymology
writing unit symbols and names
Basic units
length
mass
time
electric current
thermodynamic temperature
amount of substance
luminous intensity
Supplementary units
plane angle
solid angle
Derived units
space and time
area
speed, velocity
acceleration
volume
angular velocity
angular acceleration
periodic phenomenon
period
frequency (periodic process)
rotational frequency
mechanics
force
power
energy, work
pressure, stress
mass flow rate
density
dynamic viscosity
volumetric flow rate
linear density
kinematic viscosity
thermodynamics
heat flux, thermal flux
heat capacity
thermal conductivity
heat flux density
specific heat
heat transfer coefficient
specific energy, heat (per mass)
thermal resistance
entropy
specific energy, heat (per volume)
thermal resistivity
specific entropy
superficial thermal resistance
electricity and magnetism
electric potential difference
charge, amount of electricity
resistance
capacitance
inductance
resistivity
magnetic flux
magnetic flux density
optica, photometry
luminous flux
luminance
illuminance