Mass per volume density.
Picograms per Liter to Drams per Gallon Converter — pg/L to dr/gal
Convert Picogram per Liter (pg/L) to Dram per Gallon (dr/gal) using the exact conversion factor (1 picogram per liter = 2.136424e-12 dram per gallon). See the formula, worked examples, and conversion table.
Picograms per Liter to Drams per Gallon 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-12 / 0.4680719817.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Picograms per Liter to Drams per Gallon
Picogram per Liter and Dram per Gallon 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 gallon = picograms per liter × 2.136424e-12
This factor comes from each unit's defined relationship to the category's base unit: 1 picogram per liter equals 1e-12 base units, and 1 dram per gallon equals 0.468071981707 base units, so dividing one by the other gives the direct picogram per liter-to-dram per gallon factor of 2.136424e-12.
Simple example
1 pg/L × 2.136424e-12 = 2.136424e-12 dr/gal
1 picogram per liter = 2.136424e-12 drams per gallon.
Real-world example
1,000 pg/L × 2.136424e-12 = 2.136424e-9 dr/gal
1,000 picograms per liter = 2.136424e-9 drams per gallon.
Conversion table
| Picogram per Liter (pg/L) | Dram per Gallon (dr/gal) |
|---|---|
| 0.1 pg/L | 2.136424e-13 dr/gal |
| 1 pg/L | 2.136424e-12 dr/gal |
| 10 pg/L | 2.136424e-11 dr/gal |
| 100 pg/L | 2.136424e-10 dr/gal |
| 1,000 pg/L | 2.136424e-9 dr/gal |
| 10,000 pg/L | 2.136424e-8 dr/gal |
Reverse conversion: Dram per Gallon to Picogram per Liter
2.136424e-12 dr/gal × 468071981700 = 1.000000215 pg/L
2.136424e-12 drams per gallon = 1.000000215 picograms per liter.
picograms per liter = drams per gallon × 468071981707
For a page dedicated to this direction, see Dram per Gallon to Picogram per Liter.
Understanding the Picogram per Liter (pg/L)
Mass per volume density.
Understanding the Dram per Gallon (dr/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many drams per gallon are in 1 picogram per liter?
1 picogram per liter equals 2.136424e-12 drams per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert picogram per liter to dram per gallon?
Multiply the picogram per liter value by 2.136424e-12. The converter above does this instantly to whatever precision you set.
How do I convert dram per gallon back to picogram per liter?
Use the reverse factor: 1 dram per gallon equals 468,071,981,700 picograms per liter. You can also use the swap control in the converter above to flip the direction instantly.
What is a picogram per liter?
Picogram per Liter (pg/L) is a unit of density.
What is a dram per gallon?
Dram per Gallon (dr/gal) is a unit of density.
Is the picogram per liter to dram per gallon conversion exact?
Yes. Both picogram per liter and dram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 2.136424e-12 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.