1. 
Divide the weight of the (in grams) of the piece that you have by the density (listed below) of the material that you have. This yields the volume (in cubic centimeters) of the original.

2. 
Multiply the volume (obtained above) by the density of the material that you want to obtain the weight of the finished casting.

Approximate Density of Materials 
Material 
Density (g/cc)

Wax 
1.0 
Silver 
12.0 
14K Gold (inc. w/palladium) 
14.0 
18K Gold (inc. w/palladium) 
16.5 
Platinum (90 or 95 Iridium) 
21.5 
Palladium (95) 
12.0 
or 3. 
Use the calculator below
