Precious Metal Weight Converter
About the Precious Metal Weight Converter
Convert gold and silver weights between troy ounces, grams, kilograms and regional units such as the tola and the tael. Enter a weight in any unit and every other unit updates at once, so you can compare quotes that use different measures.
This tool loads current rates from free public data services, so it needs an internet connection. The amounts you type are used in your browser only.
How to use it
- Enter a weight.
- Choose the unit it is currently in.
- Read the equivalent in every other unit.
Frequently asked questions
What is the difference between a troy ounce and an ounce?
A troy ounce is 31.1034768 g and is the standard for pricing precious metals. The avoirdupois ounce used for everyday weight is 28.349523125 g. The troy ounce is about 10% heavier, so the distinction matters whenever money is involved.
How many grams are in a troy ounce?
Exactly 31.1034768 grams, by definition. A kilogram of gold is therefore about 32.1507 troy ounces.
What is a pennyweight?
One twentieth of a troy ounce, 1.55517384 g. Jewellers in the United States and United Kingdom often quote scrap gold in pennyweight (abbreviated dwt).
What is a tola, a tael, and a baht?
They are regional bullion units. A tola is 3/8 troy ounce (11.6638038 g) and is used across South Asia. A tael is 37.799364167 g and is used in Hong Kong and Chinese gold markets. A Thai gold baht is 15.244 g for bullion.
How many grains are in a troy ounce?
480 grains make one troy ounce, so a grain is 0.06479891 g. Grains are mostly encountered in older assay documents.