What is a troy ounce?

Definition
toz

The troy ounce (toz) is used for precious metals like gold and silver, equal to 31.1035 grams — heavier than a standard ounce.

Unit system
Scientific & Precious Metals
All weight units
UnitSymbolSystem
milligrams mg Metric
grams g Metric
kilograms kg Metric
metric tonnes t Metric
ounces oz Imperial / US
pounds lb Imperial / US
stones st Imperial / US
short tons ton Imperial / US
troy ounces toz Scientific & Precious Metals