The table below lists the most common metric prefixes and their relationship to the central unit that has no prefix. Length is used as an example to demonstrate the relative size of each prefixed unit ...

Physics World corresponding editor Isabelle Dumé reports from a Paris symposium celebrating the 150th anniversary of the ...

The metric system is used to measure the length, mass or capacity of an object ... You measure the weight of heavier objects in kilograms (kg), for example the weight of a person.

for example, whether 400cm² is bigger (or smaller) than 4m². Objects can be measured in different units, depending on their size. It is important to know the conversions between metric units.