The milligram (mg) is a tiny metric unit of mass equal to one-thousandth of a gram, essential in pharmaceuticals and nutrition labeling. Medication dosages, vitamin content, and food additive quantities are typically expressed in milligrams. One milligram equals approximately 0.0000353 ounces, making it the go-to unit for measuring extremely small masses.

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.