Karating Up and Down Conversions

To figure out how much gold you should add to karat up:

Take your starting weight, and figure exactly how much alloy is contained. Divide this weight by the alloy factor of the karat you want to go up to. This will give you the total weight of the desired karat that you will end up with. Subtract from this total weight your starting weight, and this will tell you how much fine gold to add.

To figure how much alloy to add to Karat down:

Take your starting weight and figure exactly how much fine gold is contained. Divide this number by the gold factor of the karat you want to go down to. This will give you the total weight of the desired karat you will end up with. Subtract your starting weight from this number, and that will tell you how much alloy to add.

Simple Conversion Factors to Karat Up or Down

Reducing Factors

To reduce karat: Find reducing factor at intersection of "Karat on Hand" and "Karat Wanted". Multiply the weight of your karat gold on hand by the reducing factor. This gives you the weight of alloy you must add to reduce to karat wanted.

Raising Factors

To raise karat: Find raising factor at intersection of "Karat on Hand" and "Karat Wanted"". Multiply the weight of your karat gold on hand by the raising factor. This gives you the weight of fine gold you must add to raise to karat wanted.