Mass per volume density.
Nanograms per Liter to Carats per Quart Converter — ng/L to ct/qt
Convert Nanogram per Liter (ng/L) to Carat per Quart (ct/qt) using the exact conversion factor (1 nanogram per liter = 4.731765e-9 carat per quart). See the formula, worked examples, and conversion table.
Nanograms per Liter to Carats per Quart 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 / 0.2113376419.
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 Carats per Quart
Nanogram per Liter and Carat per Quart 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
carats per quart = nanograms per liter × 4.731765e-9
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 carat per quart equals 0.211337641887 base units, so dividing one by the other gives the direct nanogram per liter-to-carat per quart factor of 4.731765e-9.
Simple example
1 ng/L × 4.731765e-9 = 4.731765e-9 ct/qt
1 nanogram per liter = 4.731765e-9 carats per quart.
Real-world example
1,000 ng/L × 4.731765e-9 = 0.0000047318 ct/qt
1,000 nanograms per liter = 0.0000047318 carats per quart.
Conversion table
| Nanogram per Liter (ng/L) | Carat per Quart (ct/qt) |
|---|---|
| 0.1 ng/L | 4.731765e-10 ct/qt |
| 1 ng/L | 4.731765e-9 ct/qt |
| 10 ng/L | 4.731765e-8 ct/qt |
| 100 ng/L | 4.731765e-7 ct/qt |
| 1,000 ng/L | 0.0000047318 ct/qt |
| 10,000 ng/L | 0.0000473176 ct/qt |
Reverse conversion: Carat per Quart to Nanogram per Liter
4.731765e-9 ct/qt × 211337641.9 = 1.000000057 ng/L
4.731765e-9 carats per quart = 1.000000057 nanograms per liter.
nanograms per liter = carats per quart × 211337641.887
For a page dedicated to this direction, see Carat per Quart to Nanogram per Liter.
Understanding the Nanogram per Liter (ng/L)
Mass per volume density.
Understanding the Carat per Quart (ct/qt)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many carats per quart are in 1 nanogram per liter?
1 nanogram per liter equals 4.731765e-9 carats per quart, using the exact defined conversion factor rather than an estimate.
How do I convert nanogram per liter to carat per quart?
Multiply the nanogram per liter value by 4.731765e-9. The converter above does this instantly to whatever precision you set.
How do I convert carat per quart back to nanogram per liter?
Use the reverse factor: 1 carat per quart equals 211,337,641.9 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 carat per quart?
Carat per Quart (ct/qt) is a unit of density.
Is the nanogram per liter to carat per quart conversion exact?
Yes. Both nanogram per liter and carat per quart are defined by fixed standards rather than physical artifacts, so the factor of 4.731765e-9 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.