Density and Mass
drtomg
Convert drams (avoirdupois) (dr) to milligrams (mg).
Factor1 dr = 1771.845 mg
Converter
dr
Accepts numbers or expressions, e.g. 150 + 14.7
Result
mg
Rendered to 6 significant figures.
Formula
Formula
mg = dr × 1771.845
Multiply any value in drams (avoirdupois) by 1771.845 to obtain the value in milligrams.
Worked example
Convert 1 dr to mg.
- 01Start with 1 dr.
- 02Multiply by the conversion factor: 1 × 1771.845 = 1771.85 mg.
Result1 dr = 1771.85 mg
Conversion table
| dr | mg |
|---|---|
| 1 | 1771.8 |
| 2 | 3543.7 |
| 5 | 8859.2 |
| 10 | 17718 |
| 20 | 35437 |
| 50 | 88592 |
| 100 | 1.7718e+5 |
| 200 | 3.5437e+5 |
| 500 | 8.8592e+5 |
| 1000 | 1.7718e+6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from dr to mg?
1 dr equals 1771.845 mg. To convert, multiply the value in drams (avoirdupois) by 1771.845.
How do I convert 1 dr to mg?
1 dr = 1771.85 mg. For any value, multiply by 1771.845.
How do I convert mg back to dr?
Divide by the same factor — or equivalently, multiply by 0.0005643834. So 1 mg = 0.000564383 dr.
When would I need to convert dram (avoirdupois) to milligram?
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).