How many grams are in a pennyweight?

1 dwt = 1.5552 g. To convert any amount, multiply by 1.5552.

How do you convert pennyweights to grams?

Multiply the number of pennyweights by 1.5552 to get grams. The formula is shown in the "How it's calculated" section above.

Where does the conversion factor come from?

It's a published international standard. Most are defined exactly by international agreement (e.g. 1 inch = 25.4 mm exactly, 1 lb = 0.45359237 kg exactly). Source citations are listed under the formula above.

Unit converter — Gold weight

Pennyweights to grams converter

Convert pennyweights (dwt) to grams (g). Source-cited conversion factor, exact to the displayed precision.

Results are mathematically exact for the displayed precision. How we calculate.

How it's calculated

Convert pennyweights to grams— the formula

Pennyweights convert to grams by multiplying by the published conversion factor. The factor below is exact to the precision shown, sourced from the citation under the formula.

g = dwt × 1.5552

dwt = g × 0.643015

Troy weight system, ISO 31-3: 1 troy oz = 31.1034768 g; 1 dwt (pennyweight) = 1/20 troy oz = 1.55517384 g; 1 grain = 1/24 dwt = 0.06479891 g (NIST SP 811).

Questions

Frequently asked questions

How many grams are in a pennyweight?
1 dwt = 1.5552 g. To convert any amount, multiply by 1.5552.
How do you convert pennyweights to grams?
Multiply the number of pennyweights by 1.5552 to get grams. The formula is shown in the "How it's calculated" section above.
Where does the conversion factor come from?
It's a published international standard. Most are defined exactly by international agreement (e.g. 1 inch = 25.4 mm exactly, 1 lb = 0.45359237 kg exactly). Source citations are listed under the formula above.