Density and Mass
grtodwt
Convert grains (gr) to pennyweights (troy) (dwt).
Factor1 gr = 0.04166667 dwt
Converter
gr
Accepts numbers or expressions, e.g. 150 + 14.7
Result
dwt
Rendered to 6 significant figures.
Formula
Formula
dwt = gr × 0.04166667
Multiply any value in grains by 0.04166667 to obtain the value in pennyweights (troy).
Worked example
Convert 24 gr to dwt.
- 01Start with 24 gr.
- 02Multiply by the conversion factor: 24 × 0.04166667 = 1 dwt.
Result24 gr = 1 dwt
Conversion table
| gr | dwt |
|---|---|
| 1 | 0.041667 |
| 2 | 0.083333 |
| 5 | 0.20833 |
| 10 | 0.41667 |
| 20 | 0.83333 |
| 50 | 2.0833 |
| 100 | 4.1667 |
| 200 | 8.3333 |
| 500 | 20.833 |
| 1000 | 41.667 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from gr to dwt?
1 gr equals 0.04166667 dwt. To convert, multiply the value in grains by 0.04166667.
How do I convert 1 gr to dwt?
1 gr = 0.0416667 dwt. For any value, multiply by 0.04166667.
How do I convert dwt back to gr?
Divide by the same factor — or equivalently, multiply by 24. So 1 dwt = 24 gr.
When would I need to convert grain (troy/apothecary) 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).