Density and Mass
dwttokg
Convert pennyweights (troy) (dwt) to kilograms (kg).
Factor1 dwt = 0.001555174 kg
Converter
dwt
Accepts numbers or expressions, e.g. 150 + 14.7
Result
kg
Rendered to 6 significant figures.
Formula
Formula
kg = dwt × 0.001555174
Multiply any value in pennyweights (troy) by 0.001555174 to obtain the value in kilograms.
Worked example
Convert 1 dwt to kg.
- 01Start with 1 dwt.
- 02Multiply by the conversion factor: 1 × 0.001555174 = 0.00155517 kg.
Result1 dwt = 0.00155517 kg
Conversion table
| dwt | kg |
|---|---|
| 1 | 0.0015552 |
| 2 | 0.0031103 |
| 5 | 0.0077759 |
| 10 | 0.015552 |
| 20 | 0.031103 |
| 50 | 0.077759 |
| 100 | 0.15552 |
| 200 | 0.31103 |
| 500 | 0.77759 |
| 1000 | 1.5552 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from dwt to kg?
1 dwt equals 0.001555174 kg. To convert, multiply the value in pennyweights (troy) by 0.001555174.
How do I convert 1 dwt to kg?
1 dwt = 0.00155517 kg. For any value, multiply by 0.001555174.
How do I convert kg back to dwt?
Divide by the same factor — or equivalently, multiply by 643.0149. So 1 kg = 643.015 dwt.
When would I need to convert pennyweight (troy) to kilogram?
Mass conversions appear in material balances, reagent dosing, and reconciling vendor specifications across imperial/metric systems.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).