JustChartsGold Weight Units: Tola, Tael, Baht and Grams Compared
A tola (South Asia and the Gulf) is 11.6638 grams, a Hong Kong gold tael is 37.429 grams, and a Thai baht of gold bullion is 15.244 grams. Gold is traded internationally in troy ounces of 31.1035 grams, so one tola is about 0.375 troy ounces, one Hong Kong tael about 1.203 ounces and one baht about 0.49 ounces.
Key facts
- Tola
- 11.6638 g = 0.375 troy oz
- Hong Kong gold tael
- 37.429 g = 1.203 troy oz
- Thai baht (bullion)
- 15.244 g = 0.490 troy oz
- Troy ounce
- 31.1035 g
- 10-tola bar
- 116.64 g = 3.75 troy oz
Conversion table
| Unit | Where it’s used | Grams | Troy ounces |
|---|---|---|---|
| Troy ounce | Worldwide (trading, bullion) | 31.1035 | 1 |
| Tola | India, Pakistan, Nepal, UAE and the Gulf | 11.6638 | 0.375 |
| Tael (gold, Hong Kong) | Hong Kong gold market | 37.429 | 1.2034 |
| Tael (Hong Kong legal unit) | General weights in Hong Kong | 37.799 | 1.2153 |
| Baht (gold bullion) | Thailand | 15.244 | 0.4901 |
| Kilogram | Worldwide | 1,000 | 32.1507 |
Hong Kong uses two different taels: the gold-trading tael of 37.429 g (the Chinese Gold & Silver Exchange Society standard) and a slightly heavier general legal tael of 37.799 g. Thai jewellery is sometimes weighed at a marginally lower baht than bullion — check which one a dealer is quoting.
How to convert a gold price
Price per local unit = price per troy ounce × (grams in unit ÷ 31.1035)
Example: at $2,400 per ounce, one tola is worth $2,400 × 0.375 = $900 before taxes, duties and dealer premiums; one Hong Kong tael is about $2,888.
Local units and trading lots
Trading platforms only use troy ounces. A 10-tola bar (3.75 oz) is about 0.0375 standard lots, so the nearest tradable size at a 0.01-lot step is 0.04 lots. See how many lots 1 kg of gold is and troy ounce vs ounce.
Why local prices differ from the world price
Local gold prices include import duties, sales taxes, the local currency exchange rate, purity (for example 22 karat jewellery is about 91.6% gold) and making charges, so they rarely equal the international spot price converted directly.
Frequently asked questions
How many grams is 1 tola of gold?
11.6638 grams, which is 0.375 troy ounces. It is often rounded to 11.66 or 11.7 grams in local markets.
How many grams is a tael of gold?
In the Hong Kong gold market, 37.429 grams. Hong Kong’s general legal tael is 37.799 grams, and other regions have used different taels, so check which one is meant.
How many grams is 1 baht of gold?
A baht of gold bullion in Thailand is 15.244 grams (about 0.49 troy ounces).
Put it into practice
Live charts, an economic calendar and trading calculators — free with a JustCharts account.
See the live gold price per ounceThis article is for education only and is not financial advice. Trading leveraged products carries a high risk of losing money. Contract sizes, trading hours and leverage limits vary by broker and country — always check your own broker’s specifications.