Convert a gold fineness number such as 999, 916 or 750 into its percentage purity and mathematical karat equivalent.
Fineness expresses the gold fraction in parts per thousand. The karat result is a mathematical equivalent on a 24-part scale.
Fineness gives a consistent numerical expression of purity and is especially useful when calculating fine-gold content, alloy requirements and melt value.
916 fineness represents 91.6% gold and a 21.984-karat mathematical equivalent, commonly rounded to about 22K.
750 represents 75% gold, equivalent to 18K mathematically.
Yes. The tool accepts values up to 1000.