Mass per volume density.
Centigrams per Gallon to Nanograms per Liter Converter — cg/gal to ng/L
Convert Centigram per Gallon (cg/gal) to Nanogram per Liter (ng/L) using the exact conversion factor (1 centigram per gallon = 2,641,720.524 nanogram per liter). See the formula, worked examples, and conversion table.
Centigrams per 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 0.002641720524 / 1e-9.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Centigrams per Gallon to Nanograms per Liter
Centigram per 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 = centigrams per gallon × 2641720.52358
This factor comes from each unit's defined relationship to the category's base unit: 1 centigram per gallon equals 0.00264172052358 base units, and 1 nanogram per liter equals 1e-9 base units, so dividing one by the other gives the direct centigram per gallon-to-nanogram per liter factor of 2641720.52358.
Simple example
1 cg/gal × 2641720.524 = 2,641,720.524 ng/L
1 centigram per gallon = 2,641,720.524 nanograms per liter.
Real-world example
1,000 cg/gal × 2641720.524 = 2,641,720,524 ng/L
1,000 centigrams per gallon = 2,641,720,524 nanograms per liter.
Conversion table
| Centigram per Gallon (cg/gal) | Nanogram per Liter (ng/L) |
|---|---|
| 0.1 cg/gal | 264,172.0524 ng/L |
| 1 cg/gal | 2,641,720.524 ng/L |
| 10 cg/gal | 26,417,205.24 ng/L |
| 100 cg/gal | 264,172,052.4 ng/L |
| 1,000 cg/gal | 2,641,720,524 ng/L |
| 10,000 cg/gal | 26,417,205,240 ng/L |
Reverse conversion: Nanogram per Liter to Centigram per Gallon
1 ng/L × 3.785412e-7 = 3.785412e-7 cg/gal
1 nanogram per liter = 3.785412e-7 centigrams per gallon.
centigrams per gallon = nanograms per liter × 3.785412e-7
For a page dedicated to this direction, see Nanogram per Liter to Centigram per Gallon.
Understanding the Centigram per Gallon (cg/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 centigram per gallon?
1 centigram per gallon equals 2,641,720.524 nanograms per liter, using the exact defined conversion factor rather than an estimate.
How do I convert centigram per gallon to nanogram per liter?
Multiply the centigram per gallon value by 2641720.524. The converter above does this instantly to whatever precision you set.
How do I convert nanogram per liter back to centigram per gallon?
Use the reverse factor: 1 nanogram per liter equals 3.785412e-7 centigrams per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a centigram per gallon?
Centigram per Gallon (cg/gal) is a unit of density.
What is a nanogram per liter?
Nanogram per Liter (ng/L) is a unit of density.
Is the centigram per gallon to nanogram per liter conversion exact?
Yes. Both centigram per gallon and nanogram per liter are defined by fixed standards rather than physical artifacts, so the factor of 2641720.524 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.