Gold karat converter
A karat is a share of pure gold out of 24: 21K gold is 21 parts gold in 24, or 87.5%. Enter a weight and its karat to see how much pure gold it holds, what it weighs in another karat, and what it is worth today.
Weight
Priced in
Pure gold in 10 g of 21K
8.75 g
As 18K, the same gold weighs 11.67 g.
- Worth today, 21K
- USD 1,180.36
- One gram of 21K
- USD 118.04
- One gram of 24K
- USD 134.90
From the international price in US dollars an ounce, at the day's rate: the same feed and formula as Wallet in Pockito. A jeweller adds making charges and a margin.
Today, one gram in USD
- 24K
- 134.90
- 22K
- 123.66
- 21K
- 118.04
- 18K
- 101.17
- 14K
- 78.69
Karat, purity and fineness
A karat is one 24th of the piece. Fineness gives the same share in thousandths and is the number stamped on gold; stamps round it, so 22K is stamped 916.
| Karat | Pure gold | Fineness | 1 g holds |
|---|---|---|---|
| 24K | 100% | 999 | 1.000 g |
| 22K | 91.7% | 916 | 0.917 g |
| 21K | 87.5% | 875 | 0.875 g |
| 18K | 75% | 750 | 0.750 g |
| 14K | 58.3% | 585 | 0.583 g |
Gold weight units
The converter takes a weight in any of these.
| Unit | Grams | Where |
|---|---|---|
| Troy ounce | 31.1035 | Worldwide, for bars and coins |
| Tola | 11.6638 | India, Pakistan, Nepal and the Gulf |
| Baht, bars | 15.244 | Thailand |
| Baht, jewellery | 15.16 | Thailand |
| Chỉ | 3.75 | Vietnam |
| Lượng | 37.5 | Vietnam |
| Tael | 37.429 | Hong Kong |
| Tael | 37.5 | Taiwan |
| Qián | 3.75 | Taiwan |
| Don | 3.75 | South Korea |
Sources: the troy ounce of 31.1034768 g; the tola's legal 180 grains; the Gold Traders Association of Thailand for the baht; Hong Kong's troy tael.
Questions, answered.
How do I turn 21K gold into its 24K weight?
Multiply the weight by 21 and divide by 24: 10 g of 21K holds 8.75 g of pure gold.
Why is a jeweller's price higher than this?
Shops add making charges and their margin to the gold's value; this is the gold alone, at the day's international price.
Is 999 the same as 24K?
999 gold is 99.9% pure, the purest sold, and counts as 24K. Some markets also sell 995 bars.