Mass per volume density.
Nanograms per Liter to Centigrams per Gallon Converter — ng/L to cg/gal
Convert Nanogram per Liter (ng/L) to Centigram per Gallon (cg/gal) using the exact conversion factor (1 nanogram per liter = 3.785412e-7 centigram per gallon). See the formula, worked examples, and conversion table.
Nanograms per Liter to Centigrams 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-9 / 0.002641720524.
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 Centigrams per Gallon
Nanogram per Liter and Centigram 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
centigrams per gallon = nanograms per liter × 3.785412e-7
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 centigram per gallon equals 0.00264172052358 base units, so dividing one by the other gives the direct nanogram per liter-to-centigram per gallon factor of 3.785412e-7.
Simple example
1 ng/L × 3.785412e-7 = 3.785412e-7 cg/gal
1 nanogram per liter = 3.785412e-7 centigrams per gallon.
Real-world example
1,000 ng/L × 3.785412e-7 = 0.0003785412 cg/gal
1,000 nanograms per liter = 0.0003785412 centigrams per gallon.
Conversion table
| Nanogram per Liter (ng/L) | Centigram per Gallon (cg/gal) |
|---|---|
| 0.1 ng/L | 3.785412e-8 cg/gal |
| 1 ng/L | 3.785412e-7 cg/gal |
| 10 ng/L | 0.0000037854 cg/gal |
| 100 ng/L | 0.0000378541 cg/gal |
| 1,000 ng/L | 0.0003785412 cg/gal |
| 10,000 ng/L | 0.0037854118 cg/gal |
Reverse conversion: Centigram per Gallon to Nanogram per Liter
3.785412e-7 cg/gal × 2641720.524 = 1.000000057 ng/L
3.785412e-7 centigrams per gallon = 1.000000057 nanograms per liter.
nanograms per liter = centigrams per gallon × 2641720.52358
For a page dedicated to this direction, see Centigram per Gallon to Nanogram per Liter.
Understanding the Nanogram per Liter (ng/L)
Mass per volume density.
Understanding the Centigram per Gallon (cg/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many centigrams per gallon are in 1 nanogram per liter?
1 nanogram per liter equals 3.785412e-7 centigrams per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert nanogram per liter to centigram per gallon?
Multiply the nanogram per liter value by 3.785412e-7. The converter above does this instantly to whatever precision you set.
How do I convert centigram per gallon back to nanogram per liter?
Use the reverse factor: 1 centigram per gallon equals 2,641,720.524 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 centigram per gallon?
Centigram per Gallon (cg/gal) is a unit of density.
Is the nanogram per liter to centigram per gallon conversion exact?
Yes. Both nanogram per liter and centigram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 3.785412e-7 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.