How to Convert Grains to Troy Ounces

Troy ounces are commonly used to measure precious metals.

The troy weight system is commonly used to weigh precious metals and gemstones. There are 12 troy ounces per troy pound in comparison to the 16 ounces per pound in the apothecary system. A grain is a unit of measurement that is equivalent to a single seed of a typical cereal. A simple calculation is used to convert grains to troy ounces.

Things You'll Need

• Object to weigh
• Scale
• Calculator

Instructions

1. Obtain a mass measurement from your desired object using a scale set in grains.

2. Convert grains to troy ounces by dividing the mass in grains by 480, since there are 480 grains per troy ounce.

3. Similarly, to convert troy ounces to grains, multiply the mass in troy ounces (ozt) by 480 to obtain grains (gr).

Tips & Warnings

• Since troy ounces are larger than grains, the value for ounces should be lower than the grain measurement.

References

• BullionVault: Troy Ounces
• Troy Ounce: What is a Troy Ounce