How to Convert Milligrams to Troy Ounces

Troy ounces are often used to weigh precious metals.

The milligram is a measure of weight in the metric system. The troy ounce is a product of the troy weight system, which was developed in England even before the Norman invasion in 1066, according to the University of North Carolina. The troy system includes troy ounces as well as troy pounds, drams and scruples. Though the use of the troy pound has been eliminated, the troy ounce is still used for reporting the price of precious metals such as gold and silver.

Things You'll Need

• Calculator

Instructions

1. Multiply the number of milligrams by 0.00003215 troy ounces per milligram. For example, if you had 2,000 milligrams, you would multiply 2,000 milligrams by 0.00003215 troy ounces per milligram to get 0.0643 troy ounces.

2. Divide the number of milligrams by 31,104.199 milligrams per troy ounce to double check your answer. In this example, you would divide 2,000 milligrams by 31,104.199 milligrams per troy ounce to get 0.0643 troy ounces.

3. Confirm your answer with an online calculator to make sure you did the math correctly (see Resources).

References

• University of North Carolina: Units: M
• University of North Carolina: Units: T

Resources

• Metric Conversions: Milligrams to Troy Inches