Pennyweight to Microgram Converter
Convert Pennyweight (dwt) to Microgram (µg) instantly. 1 dwt = 1,555,173.84 µg.
Mass Converter
26 units available
1 dwt = 1,555,173.84 µg
Formula:
µg = dwt × 1,555,173.84With your value: 1 dwt = 1,555,173.84 µg
How big is that?
Everyday references on a logarithmic scale, all expressed in pennyweight so you can sanity-check the result.
Other Pennyweight to Microgram conversions
Pennyweight to Microgram Conversion Table
| Pennyweight (dwt) | Microgram (µg) |
|---|---|
| 0.5 | 777,586.92 |
| 1 | 1,555,173.84 |
| 2 | 3,110,347.68 |
| 5 | 7,775,869.2 |
| 10 | 15,551,738.4 |
| 15 | 23,327,607.6 |
| 20 | 31,103,476.8 |
| 25 | 38,879,346 |
| 50 | 77,758,692 |
| 100 | 155,517,384 |
| 250 | 388,793,460 |
| 500 | 777,586,920 |
| 1000 | 1,555,173,840 |
Microgram to Pennyweight Conversion Table
| Microgram (µg) | Pennyweight (dwt) |
|---|---|
| 0.5 | 3.215075e-7 |
| 1 | 6.430149e-7 |
| 2 | 1.286030e-6 |
| 5 | 3.215075e-6 |
| 10 | 6.430149e-6 |
| 15 | 9.645224e-6 |
| 20 | 1.286030e-5 |
| 25 | 1.607537e-5 |
| 50 | 3.215075e-5 |
| 100 | 6.430149e-5 |
| 250 | 0.000161 |
| 500 | 0.000322 |
| 1000 | 0.000643 |
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
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
Microgram (µg)
Mass
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 Microgram
To convert from Pennyweight (dwt) to Microgram (µg), multiply the value by 1,555,173.84.
Formula: µg = dwt × 1,555,173.84
Reverse: dwt = µg × 6.430149e-7
Step-by-Step Example
- Start with your value in Pennyweight. For example: 5 dwt
- Multiply by the conversion factor: 5 x 1,555,173.84
- The result is: 7,775,869.2 µg
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 Microgram
The microgram (µg) equals one millionth of a gram. Vitamins, hormones and trace contaminants are dosed at this scale.
Fun Fact: Clinical writing spells out "microgram" rather than using µg to avoid dosing errors.
Common uses: pharmacology, vitamin dosing, toxicology.
Frequently Asked Questions
How many Microgram are in 1 Pennyweight?
There are exactly 1,555,173.84 Microgram in 1 Pennyweight. This means the conversion factor from Pennyweight to Microgram is 1,555,173.84.
What is the formula to convert Pennyweight to Microgram?
The formula to convert Pennyweight to Microgram is: µg = dwt × 1,555,173.84. For example, to convert 10 Pennyweight to Microgram, you would multiply 10 by 1,555,173.84.
What is a Pennyweight?
The pennyweight (dwt) equals 1/20 of a troy ounce, about 1.555 grams. Jewellers still price scrap gold by the pennyweight.
What is a Microgram?
The microgram (µg) equals one millionth of a gram. Vitamins, hormones and trace contaminants are dosed at this scale.
What are the common uses of Pennyweight?
The Pennyweight is commonly used in jewellery trade, gold scrap, assaying.
Related Mass Conversions
Cite this page
UnitConvertLab. (2026). Pennyweight to Microgram converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/pennyweight-to-microgram