Metal finishing Q&As since 1989

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What is the volume of an ounce of gold

In order to calculate the material cost of gold plating a circuit, I need to know what is the volume of gold in one 24K troy ounce?

Mark DiFalco
Electromechanical sales - Auburn Hills , Michigan, US
2004

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First of three simultaneous responses --

Gold has a density of 19.3g/cm3, so it can be worked out from that.

Trevor Crichton
R&D practical scientist
Chesham, Bucks, UK
2004

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Second of three simultaneous responses --

10.172 Troy oz. gold per cu. in.

Neil Bell
Red Sky Plating

Albuquerque, New Mexico

2004

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Third of three simultaneous responses --

The Specific Gravity of Gold is 19.3. Therefore 19.3 grams occupy 1 cubic centimeter. 1 Troy ounce is 31.1 grams. So, to get the volume of 1 Troy Oz., we have 31.1/19.3 = 1.61 cubic centimeters.

Tom Gallant
- Long Beach, California, USA
2004

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September 13, 2010

hmm...
1.61*1.61*1.61=4.17 cubic centimeters.

you actually need to take the cubic root of 1.61.

roughly, 1.172 cubic centimeters.

mark l.
- knoxville, Tennessee

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Hi,

Everyone's numbers are correct but there has been a little pit of confusion about units. A small "dice cube" of gold, 1.172 cm long x 1.172 cm x 1.172 cm high will have a volume of 1.61 cubic centimeters and will weigh 1 Troy ounce.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
September 13, 2010