Convert Pennyweights to Kilograms
Convert Pennyweights (dwt) to Kilograms (kg) instantly and accurately.
Conversion Formula
kg = dwt × 0.00155517384
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 Kilograms
The kilogram (kg) is the SI base unit of mass - the fundamental unit from which all other mass measurements in the metric system are derived. Since 2019 it has been defined by fixing the Planck constant h to exactly 6.62607015 × 10⁻³⁴ J·s, replacing the 130-year-old International Prototype Kilogram (a platinum-iridium cylinder kept in Sèvres, France). The kilogram governs daily life worldwide: body weight in most countries, grocery shopping, luggage allowances, postal rates, freight pricing, and ingredient quantities in cooking all reference kilograms.
Quick Reference Table
| Pennyweights (dwt) | Kilograms (kg) |
|---|---|
| 1 dwt | 0.00155517 kg |
| 2 dwt | 0.00311035 kg |
| 5 dwt | 0.00777587 kg |
| 10 dwt | 0.0155517 kg |
| 25 dwt | 0.0388793 kg |
| 50 dwt | 0.0777587 kg |
| 100 dwt | 0.155517 kg |