Pennyweight to Hundredweight (US) Converter

Mass Converter

26 units available

Decimals:

From

To

3.428571e-5

1 dwt = 3.428571e-5 cwt

Formula:

cwt = dwt × 0.0000342857

With your value: 1 dwt = 3.428571e-5 cwt

How big is that?

Everyday references on a logarithmic scale, all expressed in pennyweight so you can sanity-check the result.

Paperclip (1/1.6 your value)0.643 dwt

Your value1.00 dwt

AA battery (15× your value)15.4 dwt

Can of soda (2.5e+2× your value)251 dwt

Bag of sugar (6.4e+2× your value)643 dwt

House cat (2.9e+3× your value)2.89e+3 dwt

Other Pennyweight to Hundredweight (US) conversions

2 dwt to cwt 3 dwt to cwt 4 dwt to cwt 5 dwt to cwt 6 dwt to cwt 7 dwt to cwt 8 dwt to cwt

Pennyweight to Hundredweight (US) Conversion Table

Pennyweight (dwt)	Hundredweight (US) (cwt)
0.5	1.714286e-5
1	3.428571e-5
2	6.857143e-5
5	0.000171
10	0.000343
15	0.000514
20	0.000686
25	0.000857
50	0.001714
100	0.003429
250	0.008571
500	0.017143
1000	0.034286

Hundredweight (US) to Pennyweight Conversion Table

Hundredweight (US) (cwt)	Pennyweight (dwt)
0.5	14,583.333333
1	29,166.666667
2	58,333.333333
5	145,833.333333
10	291,666.666667
15	437,500
20	583,333.333333
25	729,166.666667
50	1,458,333.333333
100	2,916,666.666667
250	7,291,666.666667
500	14,583,333.333333
1000	29,166,666.666667

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Pennyweight (dwt)

Mass

Exact conversion

Traceable to the kilogram, defined by fixing the Planck constant at 6.626 070 15 × 10⁻³⁴ J·s. Avoirdupois masses derive from the 1959 international pound (0.453 592 37 kg exactly).

Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

Bureau International des Poids et Mesures · Reviewed 2026-07-01

Hundredweight (US) (cwt)

Mass

Exact conversion

Traceable to the kilogram, defined by fixing the Planck constant at 6.626 070 15 × 10⁻³⁴ J·s. Avoirdupois masses derive from the 1959 international pound (0.453 592 37 kg exactly).

Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

Bureau International des Poids et Mesures · Reviewed 2026-07-01

How to Convert Pennyweight to Hundredweight (US)

To convert from Pennyweight (dwt) to Hundredweight (US) (cwt), multiply the value by 3.428571e-5.

Formula: cwt = dwt × 0.0000342857

Reverse: dwt = cwt × 29,166.6666666667

Step-by-Step Example

Start with your value in Pennyweight. For example: 5 dwt
Multiply by the conversion factor: 5 x 3.428571e-5
The result is: 0.000171 cwt

About Pennyweight

The pennyweight (dwt) equals 1/20 of a troy ounce, about 1.555 grams. Jewellers still price scrap gold by the pennyweight.

Common uses: jewellery trade, gold scrap, assaying.

About Hundredweight (US)

The hundredweight (us) (cwt) is a unit of mass and weight. One hundredweight (us) equals 45.359237 kilograms. UnitConvertLab converts it against every other mass unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: mass calculations, engineering and science, education.

Frequently Asked Questions

How many Hundredweight (US) are in 1 Pennyweight?

There are exactly 3.428571e-5 Hundredweight (US) in 1 Pennyweight. This means the conversion factor from Pennyweight to Hundredweight (US) is 3.428571e-5.

What is the formula to convert Pennyweight to Hundredweight (US)?

The formula to convert Pennyweight to Hundredweight (US) is: cwt = dwt × 0.0000342857. For example, to convert 10 Pennyweight to Hundredweight (US), you would multiply 10 by 3.428571e-5.

What is a Pennyweight?