gram

A unit of mass, approximately 15.4324 grains, It is one thousandth of a kilogram, the unit of mass in SI and in previous versions of the metric system. Symbol, g. In Britain and in many other languages it is spelled gramme, but there is also a different unit with that name. See gramme.

For Americans, a handy way of becoming familiar with the metric masses of small objects is to compare them to the U.S. cent and nickel coins: