- Grams
- 31.1035
- Troy ounces
- 1
- Kilograms
- 0.0311
- Gold worth
- $4,286.20
Table: troy ounces to grams
| Troy ounces | Grams | Gold value |
|---|---|---|
| 1 | 31.1035 | $4,286 |
| 2 | 62.207 | $8,572 |
| 3 | 93.3104 | $12,859 |
| 5 | 155.5174 | $21,431 |
| 10 | 311.0348 | $42,862 |
| 20 | 622.0695 | $85,724 |
| 50 | 1,555.1738 | $214,310 |
| 100 | 3,110.3477 | $428,620 |
| 400 | 12,441.3907 | $1,714,480 |
| 1000 | 31,103.4768 | $4,286,200 |
400 ounces is the Good Delivery bar standard held in London vaults and central-bank reserves.
Table: grams to troy ounces
| Grams | Troy ounces | Gold value |
|---|---|---|
| 1 | 0.0322 | $138 |
| 5 | 0.1608 | $689 |
| 10 | 0.3215 | $1,378 |
| 20 | 0.643 | $2,756 |
| 31.1035 | 1 | $4,286 |
| 50 | 1.6075 | $6,890 |
| 100 | 3.2151 | $13,780 |
| 250 | 8.0377 | $34,451 |
| 500 | 16.0754 | $68,902 |
| 1,000 | 32.1507 | $137,805 |
Fineness and karats
| Fineness | Pure gold | Gram of alloy |
|---|---|---|
| 999.9 (24 karat) | 99.99% | $138 |
| 958 (23 karat) | 95.80% | $132 |
| 916 (22 karat) | 91.60% | $126 |
| 750 (18 karat) | 75.00% | $103 |
| 585 (14 karat) | 58.50% | $81 |
| 375 (9 karat) | 37.50% | $52 |
Karats equal fineness × 24 ÷ 1000. Prices by fineness in national currencies — on the fineness pages.
Frequently asked questions
How many grams are in a troy ounce of gold?
One troy ounce is exactly 31.1034768 grams. The figure is fixed by definition — it never changes and is the same for gold, silver, platinum and palladium.
How does a troy ounce differ from a regular ounce?
An avoirdupois ounce is 28.3495 grams and is used for food and general goods. A troy ounce is about 10% heavier and applies only to precious metals — mixing them up costs you over 90 grams per kilogram.
How many troy ounces are in a kilogram?
A kilogram holds 32.1507 troy ounces (1000 ÷ 31.1034768). That is why a one-kilo bar is slightly more than 32 ounces, not exactly 32.
How many karats is 999.9 gold?
999.9 fine is 24 karat — effectively pure gold. Karats follow the formula karats = fineness × 24 ÷ 1000, so 916 is 22 karat, 750 is 18 karat and 585 is 14 karat.