Convert Pennyweights to Slugs
Convert Pennyweights (dwt) to Slugs (slug) instantly and accurately.
Conversion Formula
slug = dwt × 0.0001065632577
About Pennyweights
A pennyweight (dwt or pwt) equals 24 grains or 1/20 of a troy ounce - approximately 1.555 grams. Its name derives from the weight of an English silver penny in the medieval period. Pennyweights are the standard unit used by jewellers and goldsmiths in North America for weighing precious metals: gold, silver, and platinum. When a jeweller quotes the gold weight of a ring or chain, they typically use pennyweights. Gold buyers, refiners, and scrap metal dealers quote prices per pennyweight (often abbreviated 'DWT') when appraising jewellery.
About Slugs
A slug is a unit of mass in the British imperial and US customary foot-pound-second (FPS) engineering system, equal to the mass that accelerates at 1 foot per second squared under a force of 1 pound-force - approximately 14.594 kg. The slug was introduced to simplify dynamics calculations in engineering: using slugs ensures that F = ma holds without unit conversion factors when force is in pounds-force and acceleration in ft/s². Aerospace engineers and mechanical engineers working in US customary units use slugs for aircraft mass, structural dynamics, and ballistic calculations.
Quick Reference Table
| Pennyweights (dwt) | Slugs (slug) |
|---|---|
| 1 dwt | 0.000106563 slug |
| 2 dwt | 0.000213127 slug |
| 5 dwt | 0.000532816 slug |
| 10 dwt | 0.00106563 slug |
| 25 dwt | 0.00266408 slug |
| 50 dwt | 0.00532816 slug |
| 100 dwt | 0.0106563 slug |