Density and Mass
dwttost
Convert pennyweights (troy) (dwt) to stones (st).
Factor1 dwt = 0.0002448981 st
Converter
dwt
Accepts numbers or expressions, e.g. 150 + 14.7
Result
st
Rendered to 6 significant figures.
Formula
Formula
st = dwt × 0.0002448981
Multiply any value in pennyweights (troy) by 0.0002448981 to obtain the value in stones.
Worked example
Convert 4000 dwt to st.
- 01Start with 4000 dwt.
- 02Multiply by the conversion factor: 4000 × 0.0002448981 = 0.979592 st.
Result4000 dwt = 0.979592 st
Conversion table
| dwt | st |
|---|---|
| 1 | 0.0002449 |
| 2 | 0.0004898 |
| 5 | 0.0012245 |
| 10 | 0.002449 |
| 20 | 0.004898 |
| 50 | 0.012245 |
| 100 | 0.02449 |
| 200 | 0.04898 |
| 500 | 0.12245 |
| 1000 | 0.2449 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from dwt to st?
1 dwt equals 0.0002448981 st. To convert, multiply the value in pennyweights (troy) by 0.0002448981.
How do I convert 1 dwt to st?
1 dwt = 0.000244898 st. For any value, multiply by 0.0002448981.
How do I convert st back to dwt?
Divide by the same factor — or equivalently, multiply by 4083.331. So 1 st = 4083.33 dwt.
When would I need to convert pennyweight (troy) to stone (UK avoirdupois)?
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).