International System of Units of Physical Quantity
| SI | Quantity | Symbol |
| kilogram | Unit of weight | Kg |
| meter | Unit of length | M |
| seconds | Unit of Time | S |
| ampere | Unit of Electric current | A |
| candela | Unit of luminous intensity | Cd |
| mole | Unit of amount of substance | Mol |
| kelvin | Unit of temperature | K |
| angstrom | Unit of wavelength | A |
| atomic weight | Weight of an atom of hydrogen | – |
| bar | Unit of atmospheric pressure | – |
| calorie | Unit of heat | – |
| horse power | Practical unit of power | – |
| joule | Unit of work or energy | J |
| knot | Measure to know the speed of a ship | – |
| light year | Unit of Astronomical distance | Ly |
| nautical mile | A unit of distance used in Navigation | – |
| pressure | Pascal | Pa |
| quintal | Metric measure of weighs | – |
| volt | Unit of Potential difference | V |
| watt | Unit of power | W |
| adian | Unit of angle | rad |
| steredian | Unit of solid angle | Sr |
| newton | Unit of force | N |
| square meter | Unit of area | M2 |
| cubic meter | Unit of volume | M3 |
| meter per second | Unit of speed | Ms-2 |
| Ohm | Unit of electric resistance | – |
| farad | Unit of electrical capacity | F |
| henry | Unit of magnetic flux | H |
| weber | Unit of magnetic flux | Wb |
| lumen | Luminous flux or photometric power | Lm |
| newton per meter | Unit of Surface tension | Nm-1 |
| Newton second per square m. | Unit of Viscosity | N.s.m-2 |
| Coulomb | Unit of electric charge | C |
| Hertz | Unit of Frequency | Hz |
| Kilogram square meter | Unit of moment of inertia | Kgm2 |
| newton second | impulse | Ns |
| watt per meter per degree Celsius | Unit of thermal conductivity | Wm-1C-1 |
| joule per kilogram per Kelvin | Unit of specific heat capacity | Jkg-1K-1 |
| lux | Unit of Illumination | lx |