Gold karat converter
Short answer: Divide the karat by 24 to get the share of gold. 18K is 18 divided by 24, or 75% gold, which is stamped 750. 24K is pure gold, and 14K is 58.5% gold, stamped 585.
How to use it
- Find the karat on the item, often stamped as 18K, 18kt or a fineness number such as 750.
- Enter the karat (a fineness stamp divided by 1000 times 24 gives the karat).
- Read the percent of gold, the fineness and the share of other metals.
- Use the purity in the gold melt value calculator to price the metal.
Formula: gold content = karat ÷ 24, and fineness = gold content × 1000
Questions
What is the difference between karat and carat?+
Karat (K) measures the purity of gold in 24ths. Carat (ct) is a unit of weight for gemstones, equal to 0.2 grams. They are spelled alike in some countries but measure different things.
Why is 24K stamped 999 and not 1000?+
No refined gold is perfectly pure, so pure gold is described as 999 or 999.9 fine. 24K is the name for gold at that level.
Is higher karat always better?+
Higher karat means more gold and a higher metal value, but the gold is softer. Lower karat alloys are harder and more durable for jewelry.
What does 750 on a ring mean?+
A 750 stamp means the item is 75% gold by weight, which is 18 karat.
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