Mass per volume density.
Drams per Liter to Nanograms per Pint Converter — dr/L to ng/pt
Convert Dram per Liter (dr/L) to Nanogram per Pint (ng/pt) using the exact conversion factor (1 dram per liter = 838,395,460.2 nanogram per pint). See the formula, worked examples, and conversion table.
Drams per Liter to Nanograms per Pint converter
Converter
Density Converter
Convert thousands of mass-per-volume density combinations for science, engineering, agriculture, and fluids.
Context values
Some unit families need one extra value for a physically accurate result.
Mass per volume density.
Result = input x 1.771845195 / 2.11337642e-9.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Drams per Liter to Nanograms per Pint
Dram per Liter and Nanogram per Pint both measure density — mass per unit volume — a property used to identify materials, check manufacturing quality, and predict whether something floats or sinks. As a fixed reference point, water has a density of exactly 1000 kg/m³ (1 g/cm³, 1 g/mL) at its temperature of maximum density, which is why many density figures in science and engineering are quoted relative to water. Both are mass per volume density units.
Formula
nanograms per pint = drams per liter × 838395460.22
This factor comes from each unit's defined relationship to the category's base unit: 1 dram per liter equals 1.77184519531 base units, and 1 nanogram per pint equals 2.113376e-9 base units, so dividing one by the other gives the direct dram per liter-to-nanogram per pint factor of 838395460.22.
Simple example
1 dr/L × 838395460.2 = 838,395,460.2 ng/pt
1 dram per liter = 838,395,460.2 nanograms per pint.
Real-world example
1,000 dr/L × 838395460.2 = 838,395,460,200 ng/pt
1,000 drams per liter = 838,395,460,200 nanograms per pint.
Conversion table
| Dram per Liter (dr/L) | Nanogram per Pint (ng/pt) |
|---|---|
| 0.1 dr/L | 83,839,546.02 ng/pt |
| 1 dr/L | 838,395,460.2 ng/pt |
| 10 dr/L | 8,383,954,602 ng/pt |
| 100 dr/L | 83,839,546,020 ng/pt |
| 1,000 dr/L | 838,395,460,200 ng/pt |
| 10,000 dr/L | 8.383955e+12 ng/pt |
Reverse conversion: Nanogram per Pint to Dram per Liter
1 ng/pt × 1.192755e-9 = 1.192755e-9 dr/L
1 nanogram per pint = 1.192755e-9 drams per liter.
drams per liter = nanograms per pint × 1.192755e-9
For a page dedicated to this direction, see Nanogram per Pint to Dram per Liter.
Understanding the Dram per Liter (dr/L)
Mass per volume density.
Understanding the Nanogram per Pint (ng/pt)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many nanograms per pint are in 1 dram per liter?
1 dram per liter equals 838,395,460.2 nanograms per pint, using the exact defined conversion factor rather than an estimate.
How do I convert dram per liter to nanogram per pint?
Multiply the dram per liter value by 838395460.2. The converter above does this instantly to whatever precision you set.
How do I convert nanogram per pint back to dram per liter?
Use the reverse factor: 1 nanogram per pint equals 1.192755e-9 drams per liter. You can also use the swap control in the converter above to flip the direction instantly.
What is a dram per liter?
Dram per Liter (dr/L) is a unit of density.
What is a nanogram per pint?
Nanogram per Pint (ng/pt) is a unit of density.
Is the dram per liter to nanogram per pint conversion exact?
Yes. Both dram per liter and nanogram per pint are defined by fixed standards rather than physical artifacts, so the factor of 838395460.2 used above is exact to as many digits as you choose to display.
What's the difference between density and mass concentration?
Density is the mass of a pure substance or material per unit volume. Mass concentration is the mass of one component — like a dissolved solute — within a mixture's total volume. The two use the same kind of units but describe different physical situations.