Density and Mass
mgtodr
Convert milligrams (mg) to drams (avoirdupois) (dr).
Factor1 mg = 0.0005643834 dr
Converter
mg
Accepts numbers or expressions, e.g. 150 + 14.7
Result
dr
Rendered to 6 significant figures.
Formula
Formula
dr = mg × 0.0005643834
Multiply any value in milligrams by 0.0005643834 to obtain the value in drams (avoirdupois).
Worked example
Convert 10000 mg to dr.
- 01Start with 10000 mg.
- 02Multiply by the conversion factor: 10000 × 0.0005643834 = 5.64383 dr.
Result10000 mg = 5.64383 dr
Conversion table
| mg | dr |
|---|---|
| 1 | 0.00056438 |
| 2 | 0.0011288 |
| 5 | 0.0028219 |
| 10 | 0.0056438 |
| 20 | 0.011288 |
| 50 | 0.028219 |
| 100 | 0.056438 |
| 200 | 0.11288 |
| 500 | 0.28219 |
| 1000 | 0.56438 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from mg to dr?
1 mg equals 0.0005643834 dr. To convert, multiply the value in milligrams by 0.0005643834.
How do I convert 1 mg to dr?
1 mg = 0.000564383 dr. For any value, multiply by 0.0005643834.
How do I convert dr back to mg?
Divide by the same factor — or equivalently, multiply by 1771.845. So 1 dr = 1771.85 mg.
When would I need to convert milligram to dram (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).