An avoirdupois dram is 1/16 ounce.
Drams to Micrograms Converter — dr to ug
Convert Dram (dr) to Microgram (ug) using the exact conversion factor (1 dram = 1,771,845.195 microgram). See the formula, worked examples, and conversion table.
Drams to Micrograms 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.
Microgram is 0.000001 gram units.
Result = input x 0.001771845195 / 1e-9.
Mass uses the kilogram as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Drams to Micrograms
Weight conversions between Dram and Microgram 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: An avoirdupois dram is 1/16 ounce, and microgram is 0.000001 gram units.
Formula
micrograms = drams × 1771845.19531
This factor comes from each unit's defined relationship to the category's base unit: 1 dram equals 0.00177184519531 base units, and 1 microgram equals 1e-9 base units, so dividing one by the other gives the direct dram-to-microgram factor of 1771845.19531.
Simple example
1 dr × 1771845.195 = 1,771,845.195 ug
1 dram = 1,771,845.195 micrograms.
Real-world example
50 dr × 1771845.195 = 88,592,259.77 ug
50 drams = 88,592,259.77 micrograms.
Conversion table
| Dram (dr) | Microgram (ug) |
|---|---|
| 1 dr | 1,771,845.195 ug |
| 5 dr | 8,859,225.977 ug |
| 10 dr | 17,718,451.95 ug |
| 25 dr | 44,296,129.88 ug |
| 50 dr | 88,592,259.77 ug |
| 100 dr | 177,184,519.5 ug |
Reverse conversion: Microgram to Dram
1 ug × 5.643834e-7 = 5.643834e-7 dr
1 microgram = 5.643834e-7 drams.
drams = micrograms × 5.643834e-7
For a page dedicated to this direction, see Microgram to Dram.
Understanding the Dram (dr)
An avoirdupois dram is 1/16 ounce.
Understanding the Microgram (ug)
Microgram is 0.000001 gram units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many micrograms are in 1 dram?
1 dram equals 1,771,845.195 micrograms, using the exact defined conversion factor rather than an estimate.
How do I convert dram to microgram?
Multiply the dram value by 1771845.195. The converter above does this instantly to whatever precision you set.
How do I convert microgram back to dram?
Use the reverse factor: 1 microgram equals 5.643834e-7 drams. You can also use the swap control in the converter above to flip the direction instantly.
What is a dram?
Dram (dr) is a unit of mass/weight.
What is a microgram?
Microgram (ug) is a unit of mass/weight.
Is the dram to microgram conversion exact?
Yes. Both dram and microgram are defined by fixed standards rather than physical artifacts, so the factor of 1771845.195 used above is exact to as many digits as you choose to display.