The gram (g) is the base unit of mass in the metric system, defined as one-thousandth of a kilogram. It is the standard measurement for food portions, postal rates, and small objects in daily life across most of the world. One gram equals approximately 0.0353 ounces, and a standard paperclip weighs roughly one gram.

The ounce (oz) is an imperial unit of weight equal to about 28.35 grams, widely used in the United States for food packaging, postal services, and precious metals. In the kitchen, recipes often list ingredients in ounces, and gold and silver are traded in troy ounces. One ounce equals approximately 28.35 grams.