Conversion Reference
1 troy ounce = 31.1035 grams
1 pennyweight (dwt) = 1/20 troy oz ≈ 1.5552 grams
1 tola = 11.6638 grams
1 kilogram = 1,000 grams
1 pennyweight (dwt) = 1/20 troy oz ≈ 1.5552 grams
1 tola = 11.6638 grams
1 kilogram = 1,000 grams
Bullion and interbank spot prices use the troy ounce. Jewelry and scrap gold in the US are usually weighed in grams or pennyweight (dwt), while South Asian jewelers commonly quote in tola. Want the current price for a converted weight? See gold price per ounce or the main per-gram calculator.
Other Pages
Gold Price Per Ounce
Troy ounce, bullion standard
Scrap Gold Calculator
Mixed lot, multiple items
Methodology
Data source & formula
Troy Ounce vs. Ounce
Troy vs. avoirdupois
Main Calculator
All karats in one tool
Frequently Asked Questions
A troy ounce is 31.1035 grams — the unit used for gold, silver and other precious metals, heavier than the everyday (avoirdupois) ounce.
Divide the gram figure by 31.1035. This converter does that instantly, alongside dwt, tola and kilogram conversions, for any of the 5 units.
1 pennyweight = 1/20 of a troy ounce, about 1.5552 grams — the unit many US pawnshops and jewelers use to weigh scrap gold.
1 tola = 11.6638 grams — the traditional gold-weight unit used across India, Pakistan, Bangladesh and Nepal.