Gold Weight Unit Converter
Convert between every weight unit used in gold and silver commerce. Enter any quantity in any unit; see it expressed in all the others instantly.
Why so many units?
Gold has been traded for thousands of years, and almost every civilization that used it developed its own weight standard. The troy ounce (31.1035 g) is the international pricing unit, descended from a medieval French weight system used at the fair of Troyes. The gram dominates modern retail. The tola (11.6638 g) still rules in India and Pakistan; it was standardized by the British Raj in the 19th century at 180 grains. The tael (37.429 g) remains the standard in Hong Kong and parts of mainland China. Each of these units has a legitimate commercial home somewhere in the world right now, and any gold calculator that does not handle all of them breaks down for a large fraction of its users.
Reference: exact conversions
All conversions below are exact (or, for units like the tael that exist in multiple regional variants, reflect the most commonly used modern standard).
| Unit | Region / usage | Grams |
|---|---|---|
| Gram | SI unit, global | 1.0000 |
| Kilogram | Investment bars | 1,000.0000 |
| Troy ounce | International gold pricing | 31.1035 |
| Ounce (avoirdupois) | Everyday US/UK weight | 28.3495 |
| Pennyweight (DWT) | US jewelry trade | 1.5552 |
| Grain | Historical, still used for tiny weights | 0.0648 |
| Tola | India, Pakistan, Nepal | 11.6638 |
| Bhari | Bangladesh (= tola) | 11.6638 |
| Masha | South Asia (1/12 of a tola) | 0.9720 |
| Ratti | South Asia, fine jewelry and gems | 0.1215 |
| Tael | Hong Kong, Taiwan (troy tael) | 37.4290 |
| Tael (Chinese) | Mainland China market | 50.0000 |
| Mesghal (Misqal) | Iran, Afghanistan | 4.6083 |
| Dirham | Historical Arab/Ottoman; modern Saudi variant | 3.1250 |
| Baht | Thailand (jewelry gold) | 15.2440 |
| Chi (Luong) | Vietnam (1/10 of a luong) | 3.7500 |
| Don | Korea | 3.7500 |
| Monme | Japan | 3.7500 |
Notes on specific units
The tael has multiple definitions. The Hong Kong "troy tael" is 37.429 grams and is the version used in precious-metals pricing across Chinese markets. Older Chinese taels ranged from about 37 to 40 grams depending on region and era. Mainland China's modern market tael is exactly 50 grams (one-twentieth of a kilogram). This tool uses the Hong Kong troy tael by default because that is what the bullion market quotes; use the "Tael (Chinese)" option for mainland retail contexts.
Tola and bhari are identical. The tola is the standard name in India, Pakistan, and Nepal. Bhari is the same unit by mass (11.6638 g) but is the more common name in Bangladesh.
The dirham has several definitions. Historical Arab dirhams varied by dynasty; Ottoman dirhams varied by era. The modern Saudi dirham used in gold markets is 3.125 g. Different definitions may be encountered in different Gulf markets.
Chi, don, and monme all equal 3.75 grams. These units, used in Vietnam, Korea, and Japan respectively, descended from the same East Asian weight system and have been harmonized at exactly 3.75 g in modern metric-aligned use.
Further tools
- Melt value calculator — put a weight and karat in, get the gold value out
- Karat converter — cross-karat equivalent weights (20g of 22K equals X grams of 18K)
- Coin calculator — live melt value for famous bullion coins
- Live prices dashboard — spot gold, silver, platinum in any currency and unit