Density and Mass
sttodwt
Convert stones (st) to pennyweights (troy) (dwt).
Factor1 st = 4083.331 dwt
Converter
st
Accepts numbers or expressions, e.g. 150 + 14.7
Result
dwt
Rendered to 6 significant figures.
Formula
Formula
dwt = st × 4083.331
Multiply any value in stones by 4083.331 to obtain the value in pennyweights (troy).
Worked example
Convert 1 st to dwt.
- 01Start with 1 st.
- 02Multiply by the conversion factor: 1 × 4083.331 = 4083.33 dwt.
Result1 st = 4083.33 dwt
Conversion table
| st | dwt |
|---|---|
| 1 | 4083.3 |
| 2 | 8166.7 |
| 5 | 20417 |
| 10 | 40833 |
| 20 | 81667 |
| 50 | 2.0417e+5 |
| 100 | 4.0833e+5 |
| 200 | 8.1667e+5 |
| 500 | 2.0417e+6 |
| 1000 | 4.0833e+6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from st to dwt?
1 st equals 4083.331 dwt. To convert, multiply the value in stones by 4083.331.
How do I convert 1 st to dwt?
1 st = 4083.33 dwt. For any value, multiply by 4083.331.
How do I convert dwt back to st?
Divide by the same factor — or equivalently, multiply by 0.0002448981. So 1 dwt = 0.000244898 st.
When would I need to convert stone (UK avoirdupois) to pennyweight (troy)?
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).