Units from the metric system can be used to describe the mass, volume or length of an object. Mass is measured in grams (g) and kilograms (kg). Volume is measured in millilitres (ml) and litres (l).

Before measuring something, it is important to know which unit to use. Estimating its approximate size by comparing it with a more familiar object can help. In order to find a suitable unit of measure ...

The week of Oct. 10 – that's 10/10 – is National Metric Week because the metric system is based on powers of 10. To change from one unit to another within the system, one has only to move the decimal ...