Mass per volume density.
Picograms per Imperial gallon to Nanograms per Liter Converter — pg/imp gal to ng/L
Convert Picogram per Imperial gallon (pg/imp gal) to Nanogram per Liter (ng/L) using the exact conversion factor (1 picogram per imperial gallon = 0.0002199692 nanogram per liter). See the formula, worked examples, and conversion table.
Picograms per Imperial gallon to Nanograms per Liter 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 2.19969248e-13 / 1e-9.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Picograms per Imperial gallon to Nanograms per Liter
Picogram per Imperial gallon and Nanogram per Liter 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 liter = picograms per imperial gallon × 0.000219969248299
This factor comes from each unit's defined relationship to the category's base unit: 1 picogram per imperial gallon equals 2.199692e-13 base units, and 1 nanogram per liter equals 1e-9 base units, so dividing one by the other gives the direct picogram per imperial gallon-to-nanogram per liter factor of 0.000219969248299.
Simple example
1 pg/imp gal × 0.0002199692483 = 0.0002199692 ng/L
1 picogram per imperial gallon = 0.0002199692 nanograms per liter.
Real-world example
1,000 pg/imp gal × 0.0002199692483 = 0.2199692483 ng/L
1,000 picograms per imperial gallon = 0.2199692483 nanograms per liter.
Conversion table
| Picogram per Imperial gallon (pg/imp gal) | Nanogram per Liter (ng/L) |
|---|---|
| 0.1 pg/imp gal | 0.0000219969 ng/L |
| 1 pg/imp gal | 0.0002199692 ng/L |
| 10 pg/imp gal | 0.0021996925 ng/L |
| 100 pg/imp gal | 0.0219969248 ng/L |
| 1,000 pg/imp gal | 0.2199692483 ng/L |
| 10,000 pg/imp gal | 2.199692483 ng/L |
Reverse conversion: Nanogram per Liter to Picogram per Imperial gallon
0.0002199692 ng/L × 4546.09 = 0.9999997804 pg/imp gal
0.0002199692 nanograms per liter = 0.9999997804 picograms per imperial gallon.
picograms per imperial gallon = nanograms per liter × 4546.09
For a page dedicated to this direction, see Nanogram per Liter to Picogram per Imperial gallon.
Understanding the Picogram per Imperial gallon (pg/imp gal)
Mass per volume density.
Understanding the Nanogram per Liter (ng/L)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many nanograms per liter are in 1 picogram per imperial gallon?
1 picogram per imperial gallon equals 0.0002199692 nanograms per liter, using the exact defined conversion factor rather than an estimate.
How do I convert picogram per imperial gallon to nanogram per liter?
Multiply the picogram per imperial gallon value by 0.0002199692483. The converter above does this instantly to whatever precision you set.
How do I convert nanogram per liter back to picogram per imperial gallon?
Use the reverse factor: 1 nanogram per liter equals 4,546.09 picograms per imperial gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a picogram per imperial gallon?
Picogram per Imperial gallon (pg/imp gal) is a unit of density.
What is a nanogram per liter?
Nanogram per Liter (ng/L) is a unit of density.
Is the picogram per imperial gallon to nanogram per liter conversion exact?
Yes. Both picogram per imperial gallon and nanogram per liter are defined by fixed standards rather than physical artifacts, so the factor of 0.0002199692483 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.