Pennyweight to Nanogram Converter

Mass Converter

26 units available

Decimals:

From

To

1,555,173,840

1 dwt = 1,555,173,840 ng

Formula:

ng = dwt × 1.555174e+9

With your value: 1 dwt = 1,555,173,840 ng

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 Nanogram conversions

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

Pennyweight to Nanogram Conversion Table

Pennyweight (dwt)	Nanogram (ng)
0.5	777,586,920
1	1,555,173,840
2	3,110,347,680
5	7,775,869,200
10	15,551,738,400
15	23,327,607,600
20	31,103,476,800
25	38,879,346,000
50	77,758,692,000
100	155,517,384,000
250	388,793,460,000.00006
500	777,586,920,000.0001
1000	1.555174e+12

Nanogram to Pennyweight Conversion Table

Nanogram (ng)	Pennyweight (dwt)
0.5	3.215075e-10
1	6.430149e-10
2	1.286030e-9
5	3.215075e-9
10	6.430149e-9
15	9.645224e-9
20	1.286030e-8
25	1.607537e-8
50	3.215075e-8
100	6.430149e-8
250	1.607537e-7
500	3.215075e-7
1000	6.430149e-7

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

Nanogram (ng)

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 Nanogram

To convert from Pennyweight (dwt) to Nanogram (ng), multiply the value by 1,555,173,840.

Formula: ng = dwt × 1.555174e+9

Reverse: dwt = ng × 6.430149e-10

Step-by-Step Example

Start with your value in Pennyweight. For example: 5 dwt
Multiply by the conversion factor: 5 x 1,555,173,840
The result is: 7,775,869,200 ng

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 Nanogram

The nanogram (ng) is a unit of mass and weight. One nanogram equals 1.000000 × 10^-12 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 Nanogram are in 1 Pennyweight?

There are exactly 1,555,173,840 Nanogram in 1 Pennyweight. This means the conversion factor from Pennyweight to Nanogram is 1,555,173,840.

What is the formula to convert Pennyweight to Nanogram?

The formula to convert Pennyweight to Nanogram is: ng = dwt × 1.555174e+9. For example, to convert 10 Pennyweight to Nanogram, you would multiply 10 by 1,555,173,840.

What is a Pennyweight?