Convert Pennyweight to Slug
Convert pennyweights to slugs instantly. 1 pennyweight = 0.0001065633 slug — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Slug to Pennyweight converter for the reverse conversion.
Units explained
Pennyweight
The pennyweight (dwt) equals one-twentieth of a troy ounce, 24 grains (about 1.555 g).
From the mass of a medieval English silver penny; symbol dwt from 'denarius weight'.
Jewelry making and precious-metal scrap valuation in the US.
Derived from the medieval English coinage system.
Slug
The slug is the mass that accelerates at 1 ft/s^2 under a force of one pound-force, about 14.59 kg.
Coined in the early 20th century for the British gravitational (engineering) system.
US and British engineering dynamics.
Introduced in the British gravitational system of units.
Pennyweight to Slug conversion formula
The relationship between pennyweights and slugs:
To convert pennyweights to slugs, multiply the value in pennyweights by 0.0001065633. To reverse, multiply slugs by 9384.0977369861.
How to use this converter
Type a value into the calculator. The result in slugs updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Slug to Pennyweight converter for the reverse direction.
Step-by-step: convert pennyweights to slugs
- Write down the value in pennyweights (dwt).
- Multiply that value by the factor 0.0001065633.
- The product is the equivalent value in slugs (slug).
- To reverse, multiply the slug value by 9384.0977369861.
Worked examples
Example 1 — Convert 1 dwt to slug:
1 × 0.0001065633 = 0.0001065633 slug
Example 2 — Convert 100 dwt to slug:
100 × 0.0001065633 = 0.0106563255 slug
Real-world example — Ruler-scale measurements
A 30-pennyweight school ruler converts cleanly to slugs — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 dwt × 0.0001065633 = 0.0031968976 slug
Real-world example — Hardware-scale dimensions
A 10-pennyweight fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between pennyweights and slugs daily when mixing metric and imperial tools.
10 dwt × 0.0001065633 = 0.0010656325 slug
Real-world example — Postcard and small-object dimensions
A postcard is about 5 pennyweights wide. Converting to slugs is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 dwt × 0.0001065633 = 0.0005328163 slug
Pennyweight to Slug conversion table
Standard reference values for converting pennyweights to slugs:
| Pennyweight [dwt] | Slug [slug] |
|---|---|
| 0.01 | 1.065633e-6 |
| 0.1 | 1.065633e-5 |
| 1 | 0.0001065633 |
| 2 | 0.0002131265 |
| 3 | 0.0003196898 |
| 4 | 0.000426253 |
| 5 | 0.0005328163 |
| 10 | 0.0010656325 |
| 20 | 0.0021312651 |
| 30 | 0.0031968976 |
| 40 | 0.0042625302 |
| 50 | 0.0053281627 |
| 100 | 0.0106563255 |
| 500 | 0.0532816275 |
| 1000 | 0.106563255 |
Frequently asked questions
How many slugs is 1 pennyweight?
How do I convert pennyweights to slugs?
How do I convert slugs back to pennyweights?
How many slugs is 100 pennyweights?
Popular weight unit conversions
Convert Pennyweight to other weight units
Show all Pennyweight conversions
Metric / SI (18 units)
Avoirdupois (15 units)
Troy & Apothecary (9 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 dwt = 0.0001065633 slug) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.