Gold Karat Calculator
Gold Karat Formula
The gold karat formula is purity (%) = karat ÷ 24 × 100. Fineness is purity in parts per 1,000, so 22 karat (22K) is 91.67% or 916.
purity % = K ÷ 24 × 100fineness = K ÷ 24 × 1,000pure gold = weight × K ÷ 24How to Calculate Gold Purity from Karat
To calculate gold purity from karat, divide the karat by 24.
Divide 22 by 24 to get 0.9167.
Multiply 0.9167 by 100 to get 91.67% purity.
Multiply the weight by 0.9167: 1 tola (11.6638 g) holds 10.692 g of pure gold.
Karat and Carat Difference
Karat (K) measures gold purity in parts of 24, and carat (ct) measures gemstone mass, with 1 ct equal to 0.2 g. One tola is 58.319 ct.
| Karat | Purity | Fineness | Pure gold in 1 tola |
|---|---|---|---|
| 24K | 99.9% | 999 | 11.652 g |
| 22K | 91.67% | 916 | 10.692 g |
| 21K | 87.5% | 875 | 10.206 g |
| 18K | 75% | 750 | 8.748 g |
Gold Karat Calculator Chart
Click a karat to load it.
| Karat | Purity | Fineness | Pure gold in 1 tola |
|---|---|---|---|
| 24K | 100% | 1000 | 11.664 g |
| 23K | 95.83% | 958 | 11.178 g |
| 22K | 91.67% | 917 | 10.692 g |
| 21K | 87.5% | 875 | 10.206 g |
| 20K | 83.33% | 833 | 9.72 g |
| 18K | 75% | 750 | 8.748 g |
| 16K | 66.67% | 667 | 7.776 g |
| 14K | 58.33% | 583 | 6.804 g |
| 12K | 50% | 500 | 5.832 g |
| 10K | 41.67% | 417 | 4.86 g |
| 9K | 37.5% | 375 | 4.374 g |
Frequently Asked Questions
How many carat in one tola?
One tola is 58.319 carats (ct), and 1 metric carat equals 0.2 grams (200 mg). Carat (ct) measures gemstone weight, and karat (K) measures gold purity.
How many grams in 1 tola 24 carat gold?
1 tola of 24 carat (24K) gold weighs 11.6638 grams and holds 11.652 g of pure gold at 99.9% purity.
What is the difference between tola and karat?
The tola is a unit of weight (11.6638 g), and the karat (K) is a unit of gold purity out of 24. 1 tola of 22K gold weighs 11.6638 g and holds 10.692 g of pure gold.
Is 1 tola of 22 carat gold 1 tola of pure gold?
No, 1 tola of 22 carat (22K) gold holds 10.692 grams of pure gold, which is 0.9167 tola. The other 0.972 g is alloy.
How many grams in one tola?
One tola is 11.6638 grams for every karat, from 9K to 24K.
How much is 1 tola in ml?
1 tola is 12 millilitres (ml) in the attar and perfume-oil trade. By density, 1 tola of water fills 11.66 ml and 1 tola of 24K gold fills 0.604 ml.
How do I convert karat to percentage?
Divide karat by 24. 22K ÷ 24 = 91.67%.
What is fineness?
Parts of pure gold per 1,000, as stamped in hallmarks: 916 for 22K, 750 for 18K, 585 for 14K.
Is 24K gold 100% pure?
In practice 24K is sold as 99.9% (999) or 99.99% pure.
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