Mass per volume density.
Nanograms per Liter to Drams per Pint Converter — ng/L to dr/pt
Convert Nanogram per Liter (ng/L) to Dram per Pint (dr/pt) using the exact conversion factor (1 nanogram per liter = 2.670529e-10 dram per pint). See the formula, worked examples, and conversion table.
Nanograms per Liter to Drams 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 1e-9 / 3.744575854.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Nanograms per Liter to Drams per Pint
Nanogram per Liter and Dram 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
drams per pint = nanograms per liter × 2.670529e-10
This factor comes from each unit's defined relationship to the category's base unit: 1 nanogram per liter equals 1e-9 base units, and 1 dram per pint equals 3.74457585365 base units, so dividing one by the other gives the direct nanogram per liter-to-dram per pint factor of 2.670529e-10.
Simple example
1 ng/L × 2.670529e-10 = 2.670529e-10 dr/pt
1 nanogram per liter = 2.670529e-10 drams per pint.
Real-world example
1,000 ng/L × 2.670529e-10 = 2.670529e-7 dr/pt
1,000 nanograms per liter = 2.670529e-7 drams per pint.
Conversion table
| Nanogram per Liter (ng/L) | Dram per Pint (dr/pt) |
|---|---|
| 0.1 ng/L | 2.670529e-11 dr/pt |
| 1 ng/L | 2.670529e-10 dr/pt |
| 10 ng/L | 2.670529e-9 dr/pt |
| 100 ng/L | 2.670529e-8 dr/pt |
| 1,000 ng/L | 2.670529e-7 dr/pt |
| 10,000 ng/L | 0.0000026705 dr/pt |
Reverse conversion: Dram per Pint to Nanogram per Liter
2.670529e-10 dr/pt × 3744575854 = 0.999999841 ng/L
2.670529e-10 drams per pint = 0.999999841 nanograms per liter.
nanograms per liter = drams per pint × 3744575853.65
For a page dedicated to this direction, see Dram per Pint to Nanogram per Liter.
Understanding the Nanogram per Liter (ng/L)
Mass per volume density.
Understanding the Dram per Pint (dr/pt)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many drams per pint are in 1 nanogram per liter?
1 nanogram per liter equals 2.670529e-10 drams per pint, using the exact defined conversion factor rather than an estimate.
How do I convert nanogram per liter to dram per pint?
Multiply the nanogram per liter value by 2.670529e-10. The converter above does this instantly to whatever precision you set.
How do I convert dram per pint back to nanogram per liter?
Use the reverse factor: 1 dram per pint equals 3,744,575,854 nanograms per liter. You can also use the swap control in the converter above to flip the direction instantly.
What is a nanogram per liter?
Nanogram per Liter (ng/L) is a unit of density.
What is a dram per pint?
Dram per Pint (dr/pt) is a unit of density.
Is the nanogram per liter to dram per pint conversion exact?
Yes. Both nanogram per liter and dram per pint are defined by fixed standards rather than physical artifacts, so the factor of 2.670529e-10 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.