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G.M. "DOC" Lousignont, Ph.D.

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Gold - Weight Conversion Chart
1999 G.M. Lousignont, Ph.D.
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Gold - Weight Conversion Chart

               

GRAIN GRAM DWT TROY OZ TROY OZ AV
GRAIN 1.0000 0.0648 0.0417 0.0021 0.0023
GRAM 15.4324 1.0000 0.6430 0.0321 0.0353
DWT TROY 24.0000 1.5552 1.0000 0.0500 0.0549
OUNCE TROY 480.0000 31.1035 20.0000 1.0000 1.0971
OUNCE AV. 437.5000 28.3495 18.2292 0.9115 1.0000


To convert:

• Avordupois Ounces to Troy ounces multiply by .91
• Avordupois Ounces to pennyweight multiply by 18.2
• Avordupois ounces to grams multiply by 28.35
• Troy ounces to grams multiply by 31.1
• Troy ounces to pennyweight multiply by 20
• Troy ounces to pounds troy, divide by 12
• Pennyweight to grams multiply by 1.56
• Pennyweight to troy ounces multiply by .05 (or divide by 20)
• Grams to pennyweight multiply by .64
• Grams to troy ounces multiply by .032
• Grams to carats multiply by 5
• Carats to grams multiply by .2 (or divide by 5)
• Carats to "Points" multiply by 100.
• "Points" to carats multiply by .01 (or divide by 100)

Weight Conversion Chart for Silver, Gold and Gems

Troy Weight - gold and silver are measured in Troy weight, a system that includes pennyweights, ounces and pounds. The
ounces and pounds do not equal the Avordupois or customary U.S. system that other common goods are measured in. For example a troy ounce weighs about 10 percent more than a Avordupois ounce.

• 24 grains = 1 pennyweight = 1.5552 grams
• 1 gram = .64 pennyweight
• 1 pennyweight = 1.56 grams or .05 troy ounce
• 20 pennyweight = 1 troy ounce = 31.1035 grams
• 12 ounces = 1 pound troy = 373.24 grams.
 

 

Accuracy: Rounded-off to 4 decimal places.