How many pennyweights are in one gram?

One gram contains approximately 0.6430 pennyweights. Conversely, one pennyweight equals about 1.555 grams.

Where is the pennyweight used?

North American precious metals retail: gold dealers, jewelers, pawnshops, and refiners all price and weigh gold in pennyweights. The abbreviation 'dwt' comes from 'denarius weight.'

Is the gram-pennyweight conversion frequently used?

Yes - daily in the North American gold trade. Every time a jeweler weighs an item in grams on a digital scale and quotes a price in pennyweights, this conversion occurs.

Grams to Pennyweights (g to dwt) Converter

1 g = 0.643 dwt

1 Gram equals 0.643 Pennyweights (1 g = 0.643 dwt). Convert Grams to Pennyweights with formula, table, and examples.

One gram equals approximately 0.6430 pennyweights. The pennyweight (1.555 grams) is roughly one and a half grams, making the conversion nearly 1:1.5. North American gold dealers price scrap gold per pennyweight, so converting from gram-scale laboratory measurements to pennyweight-based pricing is a routine operation in the precious metals industry.

How to Convert Grams to Pennyweights

dwt = g × 0.6430149314

Multiply the value in Grams by 0.6430149314

Take your value in Grams
Multiply by 0.6430149314
Read the result in Pennyweights

Common Grams to Pennyweights Conversions

Grams (g)	Pennyweights (dwt)	Status
0.5 g	0.321507 dwt
1 g	0.643015 dwt
2 g	1.28603 dwt
5 g	3.215075 dwt
10 g	6.430149 dwt
15 g	9.645224 dwt
20 g	12.860299 dwt
25 g	16.075373 dwt
50 g	32.150747 dwt
100 g	64.301493 dwt
200 g	128.602986 dwt
250 g	160.753733 dwt
500 g	321.507466 dwt
1,000 g	643.014931 dwt
5,000 g	3,215.074657 dwt
10,000 g	6,430.149314 dwt

Good to Know About Grams to Pennyweights Conversion

The gram was originally defined as the mass of one cubic centimeter of water at 4 degrees Celsius - an elegant connection between length, volume, and mass that was a founding principle of the metric system. Though the kilogram was redefined using the Planck constant in 2019, the gram retains its intuitive water relationship: one milliliter of water weighs approximately one gram, a fact that makes metric cooking and chemistry beautifully simple.

Grams to Pennyweights: What You Need to Know

A gold ring weighing 5 grams on a jeweler's scale is about 3.215 pennyweights. At scrap 14-karat gold prices of roughly 40 dollars per pennyweight, that ring's melt value is about 129 dollars. The gram-to-pennyweight conversion directly translates laboratory weight to market value in every gold-buying establishment across North America.

What is a Gram? g

A metric unit of mass equal to one thousandth of a kilogram. Widely used in cooking, nutrition labeling, and science.

Metric cooking nutrition labels postal weight

Learn more about Gram →

What is a Pennyweight? dwt

A pennyweight is a unit of mass equal to 24 grains or 1/20 of a troy ounce (1.55517384 grams). Used in the jewelry trade for weighing precious metals.

Troy jewelry manufacturing precious metal trade goldsmithing

Learn more about Pennyweight →

Going the other way? Use our Pennyweights to Grams converter.

Grams to Pennyweights FAQ

One gram contains approximately 0.6430 pennyweights. Conversely, one pennyweight equals about 1.555 grams.
North American precious metals retail: gold dealers, jewelers, pawnshops, and refiners all price and weigh gold in pennyweights. The abbreviation 'dwt' comes from 'denarius weight.'
Yes - daily in the North American gold trade. Every time a jeweler weighs an item in grams on a digital scale and quotes a price in pennyweights, this conversion occurs.

Non-Frequently Asked Questions About Grams to Pennyweights

Questions nobody should ask - but someone did.

Many countries do price gold by the gram (Dubai, India, East Asia). North American dealers use pennyweights because the troy system is deeply embedded in their trade tradition. Switching would require repricing every inventory item, rewriting every purchase receipt format, and retraining every buyer. The pennyweight persists through sheer commercial inertia.
Experienced gold buyers know that 1 gram is 'about 0.64 dwt' and that 1 pennyweight is 'about 1.55 grams.' They verify on their scales but can estimate mentally. After years of daily conversions, the factor becomes intuitive, like knowing that a dollar is about 0.9 euros without checking the exchange rate.
One gram of pure 24-karat gold at mid-2020s prices is worth about 65 dollars (0.643 pennyweights at about 101 dollars per dwt). But most jewelry is 14-karat (58.3% gold), so a gram of 14-karat gold yields about 38 dollars. The gram-to-pennyweight conversion is the first step in every scrap gold valuation.