Common household items that weigh approximately 1 gram include a paper clip, the cap of a ballpoint pen, a stick of gum, a U.S. bill of any denomination, one-quarter teaspoon of sugar, a raisin and a thumbtack. The gram is a metric measurement of mass that is equal to 0.001 kilogram.
The term "gram" is derived from the Late Latin word "gramma," meaning "small weight." It is abbreviated simply "g" and was originally the base unit in the French metric system. The gram is roughly equal to the mass of 1 cubic centimeter of pure water at 4 degrees Celsius. It was originally measured by this standard. Later it began to be calculated against the physical prototype maintained by the International Bureau of Weights and Measures.
The gram is a single unit in the larger International System of Units, the modern form of the metric system and the most widely used form of measurement across the globe as of 2014. Grams are used as standard measurements for solid and semisolid cooking ingredients, and nutrition fact labels on most food items contain measurements of nutritional content in grams. In cooking, the gram is approximately equal to 0.035 ounces, 0.002 pounds or 0.004 cups.