The metric system is an international system of measurement, that is the common system of measuring units used by most of the world. The “International System of Units” is the official system of measurement for almost all nations. The metric system has some different variations in different countries but is the most commonly used.
Some of the main and most commonly used measurements in the metric system are:
Kilograms, grams, milligrams, centre metres, metres, millimetres, kilometres, litres, millilitres and more.