Gold & Metals
Gold Karat vs Fineness: What Is the Difference?
Karat and fineness are two ways of writing the same gold purity. How the 24-part karat scale maps to parts-per-thousand fineness, with a full conversion table.
2 min read
Gold Purity Calculator
Calculate the purity, fine gold weight and equivalent karat or fineness of your jewellery. Enter what you know, the calculator handles the conversion.
Calculation Results
- Pure gold percentage
- 91.6%
- Pure gold weight
- 9.16 g
- Equivalent fineness
- 916
- Equivalent karat
- 22K
This is a mathematical conversion only. Actual purity should be confirmed by hallmark or assay.
This calculator performs standard karat–fineness arithmetic. It cannot verify the actual purity of a physical item, that requires a hallmark or an assay. Values are provided for information only.
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