Trade tools · Metals
Alloying calculator
How much fine metal and alloy to put in the crucible: to make a new karat, to raise or lower one you already have, or to bring mixed scrap to a standard. For gold, silver, platinum and palladium, with the result checked against the legal tolerance.
Choose what you are doing at the top, then the metal, the target standard and your weights; the charge and check update as you type.
Estimates for guidance; verify before production.