Direct conversion
Convert milligram [mg] to dram (apothecaries) [dr ap] instantly with formula, examples, chart, and FAQs.
1 milligram [mg] = 0.000257 dram (apothecaries) [dr ap]
1 milligram [mg] = 0.000257 dram (apothecaries) [dr ap]
Example: 1 milligram [mg] equals 0.000257 dram (apothecaries) [dr ap].
Weight and mass conversions use kilogram as the reference unit. Common factors include 1 pound = 0.45359237 kilogram and 1 ounce = 0.028349523125 kilogram.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-08-14.
The milligram (mg) is a weight unit used to express measurements in this converter.
HistoryThis unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current useUse milligram when comparing weight values, checking specifications, converting between systems, or preparing quick estimates.
The dram (apothecaries) (dr ap) is a weight unit used to express measurements in this converter.
HistoryThis unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current useUse dram (apothecaries) when comparing weight values, checking specifications, converting between systems, or preparing quick estimates.
| milligram [mg] | dram (apothecaries) [dr ap] |
|---|---|
| 1 | 0.000257 |
| 2 | 0.000514 |
| 5 | 0.001286 |
| 10 | 0.002572 |
| 20 | 0.005144 |
| 25 | 0.00643 |
| 50 | 0.01286 |
| 100 | 0.025721 |
| 1000 | 0.257206 |
Use this formula: 1 milligram [mg] = 0.000257 dram (apothecaries) [dr ap] Enter your value in the calculator and the result updates instantly.
1 milligram [mg] equals 0.000257 dram (apothecaries) [dr ap].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.