Convert Ounce to Milligram

One oz equals 28,349.52313 mg. This converter allows you to easily convert between Ounce and Milligram in real time.

Formula

oz × 28,349.52313 = mg

Example: 1 oz = 28,349.52313 mg

What is Ounce?

The ounce is a unit of mass in the imperial and US customary systems, equal to one-sixteenth of a pound, or exactly 28.349523125 grams. It is widely used in the United States for food packaging, postal rates, and portion sizes. Boxing gloves are rated in ounces (such as 8 oz or 10 oz), and restaurant menus often describe steak sizes in ounces. Note that the fluid ounce is a separate unit of volume and should not be confused with the ounce of mass.

What is Milligram?

The milligram is one-thousandth of a gram and is essential for measuring very small masses. It is most commonly seen in pharmaceutical dosages, where active ingredients are specified in milligrams per tablet or capsule. Nutritional information on food packaging also lists vitamins and minerals in milligrams. In analytical chemistry and environmental science, milligrams are used to quantify trace substances in samples.