Milligram is 0.001 gram units.
Milligrams to Drams Converter — mg to dr
Convert Milligram (mg) to Dram (dr) using the exact conversion factor (1 milligram = 0.0005643834 dram). See the formula, worked examples, and conversion table.
Milligrams to Drams converter
Converter
Mass/Weight Converter
Convert SI mass, imperial weight, jewelry, atomic, and astronomy mass units.
Context values
Some unit families need one extra value for a physically accurate result.
An avoirdupois dram is 1/16 ounce.
Result = input x 1e-6 / 0.001771845195.
Mass uses the kilogram as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Milligrams to Drams
Weight conversions between Milligram and Dram come up constantly in everyday commerce, shipping, and cooking, since US packaging is usually labeled in pounds while most of the rest of the world uses kilograms. Specifically: Milligram is 0.001 gram units, and an avoirdupois dram is 1/16 ounce.
Formula
drams = milligrams × 0.000564383391193
This factor comes from each unit's defined relationship to the category's base unit: 1 milligram equals 0.000001 base units, and 1 dram equals 0.00177184519531 base units, so dividing one by the other gives the direct milligram-to-dram factor of 0.000564383391193.
Simple example
1 mg × 0.0005643833912 = 0.0005643834 dr
1 milligram = 0.0005643834 drams.
Real-world example
50 mg × 0.0005643833912 = 0.0282191696 dr
50 milligrams = 0.0282191696 drams.
Conversion table
| Milligram (mg) | Dram (dr) |
|---|---|
| 1 mg | 0.0005643834 dr |
| 5 mg | 0.002821917 dr |
| 10 mg | 0.0056438339 dr |
| 25 mg | 0.0141095848 dr |
| 50 mg | 0.0282191696 dr |
| 100 mg | 0.0564383391 dr |
Reverse conversion: Dram to Milligram
0.0005643834 dr × 1771.845195 = 1.000000016 mg
0.0005643834 drams = 1.000000016 milligrams.
milligrams = drams × 1771.84519531
For a page dedicated to this direction, see Dram to Milligram.
Understanding the Milligram (mg)
Milligram is 0.001 gram units.
Understanding the Dram (dr)
An avoirdupois dram is 1/16 ounce.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many drams are in 1 milligram?
1 milligram equals 0.0005643834 drams, using the exact defined conversion factor rather than an estimate.
How do I convert milligram to dram?
Multiply the milligram value by 0.0005643833912. The converter above does this instantly to whatever precision you set.
How do I convert dram back to milligram?
Use the reverse factor: 1 dram equals 1,771.845195 milligrams. You can also use the swap control in the converter above to flip the direction instantly.
What is a milligram?
Milligram (mg) is a unit of mass/weight.
What is a dram?
Dram (dr) is a unit of mass/weight.
Is the milligram to dram conversion exact?
Yes. Both milligram and dram are defined by fixed standards rather than physical artifacts, so the factor of 0.0005643833912 used above is exact to as many digits as you choose to display.