Gold Purity Weight Converter is a bench reference app for jewelers and goldsmiths to convert gold weight between karats, accounting for manufacturing loss.
If you run into an issue, have a question, or want to request a feature, please email us at:
Why do my results differ slightly from my supplier's numbers?
Conversions use typical alloy densities for each karat and colour. Every refiner's exact alloy recipe differs slightly — you can enter your supplier's certified density in Settings → Density settings so future results match exactly.