Scientific Unit Converter

With > 2500 built-in units in 61 categories, this scientific unit converter is designed to convert units frequently found in science and engineering. Key features include:

• a comprehensive collection of SI units, SI-derived units and non-SI units;
• fast and easy unit search with partial names or symbols;
• favorite entries customized by the user for frequently used units;
• user-friendly display of the conversion equation;
• advanced unit builder to create and add user-defined units.

The list of all catagories:

absorbed dose, dose equivalent
absorbed dose rate
acceleration
amount of substance
angle
angular acceleration
area
area density, surface density
capacitance
catalytic activity
catalytic activity concentration
concentration, amount-of-substance concentration
current density
density, mass density
dynamic viscosity
electric charge, amount of electricity
electric charge density
electric conductance
electric current
electric dipole moment
electric field strength
electric resistance
energy, work, amount of heat, moment of force
exposure (X- and γ- rays)
force
frequency
heat capacity, entropy
heat flux density, irradiance, radiance
illuminance
inductance
kinematic viscosity
length
linear mass density
luminance
luminous intensity, luminous flux
magnetic field strength
magnetic flux
magnetic flux density
mass
molar energy
molar entropy, molar heat capacity
permeability
permeance
permittivity
power, radiant flux, radiant intensity
pressure, stress, energy density
specific energy
specific heat capacity, specific entropy
specific volume
speed, velocity
surface charge density, electric flux density
surface tension
temperature
thermal conductivity
time
voltage, electric potential difference, electromotive force
volume
volumetric flow rate
volumetric flux
wavenumber