What Are the 3 Systems of Measurements? The three standard systems of measurements are the International System of Units (SI) units, the British Imperial System, and the US Customary System. Of these, the International System of Units(SI) units are prominently used.
there are seven basic units in SI system: the meter(m),the kilogram(kg),the second (s),the kelvin(K),the ampere (A), the mole(mol), and the candela(cd).
