Mass per volume density.
Nanograms per Imperial gallon to Picograms per Liter Converter — ng/imp gal to pg/L
Convert Nanogram per Imperial gallon (ng/imp gal) to Picogram per Liter (pg/L) using the exact conversion factor (1 nanogram per imperial gallon = 219.9692483 picogram per liter). See the formula, worked examples, and conversion table.
Nanograms per Imperial gallon to Picograms 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-10 / 1e-12.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Nanograms per Imperial gallon to Picograms per Liter
Nanogram per Imperial gallon and Picogram 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
picograms per liter = nanograms per imperial gallon × 219.969248299
This factor comes from each unit's defined relationship to the category's base unit: 1 nanogram per imperial gallon equals 2.199692e-10 base units, and 1 picogram per liter equals 1e-12 base units, so dividing one by the other gives the direct nanogram per imperial gallon-to-picogram per liter factor of 219.969248299.
Simple example
1 ng/imp gal × 219.9692483 = 219.9692483 pg/L
1 nanogram per imperial gallon = 219.9692483 picograms per liter.
Real-world example
1,000 ng/imp gal × 219.9692483 = 219,969.2483 pg/L
1,000 nanograms per imperial gallon = 219,969.2483 picograms per liter.
Conversion table
| Nanogram per Imperial gallon (ng/imp gal) | Picogram per Liter (pg/L) |
|---|---|
| 0.1 ng/imp gal | 21.99692483 pg/L |
| 1 ng/imp gal | 219.9692483 pg/L |
| 10 ng/imp gal | 2,199.692483 pg/L |
| 100 ng/imp gal | 21,996.92483 pg/L |
| 1,000 ng/imp gal | 219,969.2483 pg/L |
| 10,000 ng/imp gal | 2,199,692.483 pg/L |
Reverse conversion: Picogram per Liter to Nanogram per Imperial gallon
219.9692483 pg/L × 0.00454609 = 1 ng/imp gal
219.9692483 picograms per liter = 1 nanograms per imperial gallon.
nanograms per imperial gallon = picograms per liter × 0.00454609
For a page dedicated to this direction, see Picogram per Liter to Nanogram per Imperial gallon.
Understanding the Nanogram per Imperial gallon (ng/imp gal)
Mass per volume density.
Understanding the Picogram per Liter (pg/L)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many picograms per liter are in 1 nanogram per imperial gallon?
1 nanogram per imperial gallon equals 219.9692483 picograms per liter, using the exact defined conversion factor rather than an estimate.
How do I convert nanogram per imperial gallon to picogram per liter?
Multiply the nanogram per imperial gallon value by 219.9692483. The converter above does this instantly to whatever precision you set.
How do I convert picogram per liter back to nanogram per imperial gallon?
Use the reverse factor: 1 picogram per liter equals 0.00454609 nanograms per imperial gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a nanogram per imperial gallon?
Nanogram per Imperial gallon (ng/imp gal) is a unit of density.
What is a picogram per liter?
Picogram per Liter (pg/L) is a unit of density.
Is the nanogram per imperial gallon to picogram per liter conversion exact?
Yes. Both nanogram per imperial gallon and picogram per liter are defined by fixed standards rather than physical artifacts, so the factor of 219.9692483 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.