Grams, abbreviated g, are a common unit of mass. Pennyweight, abbreviated dwt, is a measure of weight in the troy system. The troy system was used in old England, before the Norman conquest of 1066. Some troy weights have found use in the pharmaceutical industry. You may need to convert from grams to pennyweight if you have multiple weights that you need to compare but are listed in different units.
Instructions
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1
Divide the number of grams by 1.5552 to convert to pennyweight. For example, if you have 28 g, divide 28 by 1.5552 to get 18 dwt.
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2
Multiply the number of grams by 0.643 to convert to pennyweight. In this example, verify your answer by multiplying 28 by 0.643 to confirm your answer of 18 dwt.
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Check your answer with an online grams-to-pennyweight converter. Enter the weight in grams and click "Go!"