Systems of Units

Systems of Units – Units and Measurement

International System of Units (SI) is the unit system adopted by the General Conference on Weights and Measures in 1960 and recommended for use in all scientific and technical fields. It consists of seven base units (meter, kilogram, second, ampere, kelvin, mole, candela) plus derived units and prefixes.

The International System of Units (SI) defines seven units of measure as a basic set from which all other SI units are derived. The SI base units and their physical quantities are:

1. meter for length
2. kilogram for mass
3. second for time
4. ampere for electric current
5. kelvin for temperature
6. candela for luminous intensity
7. mole for the amount of substance