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).

Knowing the conversion factor will help consumers compare the power of an electric vehicle with an engine-powered one. Read ...

Expats and tourists from the United States come to Costa Rica with a handicap. While most of the rest of the world, including Costa Rica, is using the metric system, the U.S., despite several efforts ...