Mass per volume density.
Nanograms per Liter to Milligrams per Milliliter Converter — ng/L to mg/mL
Convert Nanogram per Liter (ng/L) to Milligram per Milliliter (mg/mL) using the exact conversion factor (1 nanogram per liter = 1e-9 milligram per milliliter). See the formula, worked examples, and conversion table.
Nanograms per Liter to Milligrams per Milliliter 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 / 1.
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 Milligrams per Milliliter
Nanogram per Liter and Milligram per Milliliter 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
milligrams per milliliter = nanograms per liter × 1e-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 milligram per milliliter equals 1 base unit, so dividing one by the other gives the direct nanogram per liter-to-milligram per milliliter factor of 1e-9.
Simple example
1 ng/L × 1e-9 = 1e-9 mg/mL
1 nanogram per liter = 1e-9 milligrams per milliliter.
Real-world example
1,000 ng/L × 1e-9 = 0.000001 mg/mL
1,000 nanograms per liter = 0.000001 milligrams per milliliter.
Conversion table
| Nanogram per Liter (ng/L) | Milligram per Milliliter (mg/mL) |
|---|---|
| 0.1 ng/L | 1e-10 mg/mL |
| 1 ng/L | 1e-9 mg/mL |
| 10 ng/L | 1e-8 mg/mL |
| 100 ng/L | 1e-7 mg/mL |
| 1,000 ng/L | 0.000001 mg/mL |
| 10,000 ng/L | 0.00001 mg/mL |
Reverse conversion: Milligram per Milliliter to Nanogram per Liter
1e-9 mg/mL × 1000000000 = 1 ng/L
1e-9 milligrams per milliliter = 1 nanogram per liter.
nanograms per liter = milligrams per milliliter × 1000000000
For a page dedicated to this direction, see Milligram per Milliliter to Nanogram per Liter.
Understanding the Nanogram per Liter (ng/L)
Mass per volume density.
Understanding the Milligram per Milliliter (mg/mL)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many milligrams per milliliter are in 1 nanogram per liter?
1 nanogram per liter equals 1e-9 milligrams per milliliter, using the exact defined conversion factor rather than an estimate.
How do I convert nanogram per liter to milligram per milliliter?
Multiply the nanogram per liter value by 1e-9. The converter above does this instantly to whatever precision you set.
How do I convert milligram per milliliter back to nanogram per liter?
Use the reverse factor: 1 milligram per milliliter equals 1,000,000,000 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 milligram per milliliter?
Milligram per Milliliter (mg/mL) is a unit of density.
Is the nanogram per liter to milligram per milliliter conversion exact?
Yes. Both nanogram per liter and milligram per milliliter are defined by fixed standards rather than physical artifacts, so the factor of 1e-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.