About the Units
grain (gr)
A unit of mass equal to 64.79891 milligrams, originally based on the weight of a grain of barley.
troy ounce (oz t)
A unit of mass equal to approximately 31.1 grams, used for precious metals.
Common Conversions
- 1 gr = 0.002083333 oz t
- 480.0001 gr = 1 oz t