Nanogram is 1e-9 gram units.
Nanograms to Drams Converter — ng to dr
Convert Nanogram (ng) to Dram (dr) using the exact conversion factor (1 nanogram = 5.643834e-10 dram). See the formula, worked examples, and conversion table.
Nanograms 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-12 / 0.001771845195.
Mass uses the kilogram as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Nanograms to Drams
Weight conversions between Nanogram 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: Nanogram is 1e-9 gram units, and an avoirdupois dram is 1/16 ounce.
Formula
drams = nanograms × 5.643834e-10
This factor comes from each unit's defined relationship to the category's base unit: 1 nanogram equals 1e-12 base units, and 1 dram equals 0.00177184519531 base units, so dividing one by the other gives the direct nanogram-to-dram factor of 5.643834e-10.
Simple example
1 ng × 5.643834e-10 = 5.643834e-10 dr
1 nanogram = 5.643834e-10 drams.
Real-world example
50 ng × 5.643834e-10 = 2.821917e-8 dr
50 nanograms = 2.821917e-8 drams.
Conversion table
| Nanogram (ng) | Dram (dr) |
|---|---|
| 1 ng | 5.643834e-10 dr |
| 5 ng | 2.821917e-9 dr |
| 10 ng | 5.643834e-9 dr |
| 25 ng | 1.410958e-8 dr |
| 50 ng | 2.821917e-8 dr |
| 100 ng | 5.643834e-8 dr |
Reverse conversion: Dram to Nanogram
5.643834e-10 dr × 1771845195 = 1.000000016 ng
5.643834e-10 drams = 1.000000016 nanograms.
nanograms = drams × 1771845195.31
For a page dedicated to this direction, see Dram to Nanogram.
Understanding the Nanogram (ng)
Nanogram is 1e-9 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 nanogram?
1 nanogram equals 5.643834e-10 drams, using the exact defined conversion factor rather than an estimate.
How do I convert nanogram to dram?
Multiply the nanogram value by 5.643834e-10. The converter above does this instantly to whatever precision you set.
How do I convert dram back to nanogram?
Use the reverse factor: 1 dram equals 1,771,845,195 nanograms. You can also use the swap control in the converter above to flip the direction instantly.
What is a nanogram?
Nanogram (ng) is a unit of mass/weight.
What is a dram?
Dram (dr) is a unit of mass/weight.
Is the nanogram to dram conversion exact?
Yes. Both nanogram and dram are defined by fixed standards rather than physical artifacts, so the factor of 5.643834e-10 used above is exact to as many digits as you choose to display.