How to convert 18K gold to 14K
18K gold is 75.0% pure and 14K gold is 58.5% pure. To find the 14K weight with the same gold content, multiply the 18K weight by 0.75 and divide by 0.585. One gram of 18K equals 1.2821 grams of 14K.
Example
10 g of 18K gold contains 7.5 g of pure gold, the same as 12.8205 g of 14K. Today 10 g of 18K is worth $998.39.
When you need this conversion
- Exchanging old jewelry for new pieces in a different karat.
- Comparing prices quoted per gram of 22k with prices quoted for 18k or 24k.
- Planning how much of a karat a jeweler needs to remake an item.
Note that remaking jewelry involves melting losses and labor, so a jeweler's exchange rate is usually below this pure-gold equivalent. See methodology.