Mass per volume density.
Nanograms per Liter to Picograms per Cubic Millimeter Converter — ng/L to pg/mm3
Convert Nanogram per Liter (ng/L) to Picogram per Cubic Millimeter (pg/mm3) using the exact conversion factor (1 nanogram per liter = 0.001 picogram per cubic millimeter). See the formula, worked examples, and conversion table.
Nanograms per Liter to Picograms per Cubic Millimeter 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 / 1e-6.
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 Picograms per Cubic Millimeter
Nanogram per Liter and Picogram per Cubic Millimeter 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 cubic millimeter = nanograms per liter × 0.001
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 picogram per cubic millimeter equals 0.000001 base units, so dividing one by the other gives the direct nanogram per liter-to-picogram per cubic millimeter factor of 0.001.
Simple example
1 ng/L × 0.001 = 0.001 pg/mm3
1 nanogram per liter = 0.001 picograms per cubic millimeter.
Real-world example
1,000 ng/L × 0.001 = 1 pg/mm3
1,000 nanograms per liter = 1 picograms per cubic millimeter.
Conversion table
| Nanogram per Liter (ng/L) | Picogram per Cubic Millimeter (pg/mm3) |
|---|---|
| 0.1 ng/L | 0.0001 pg/mm3 |
| 1 ng/L | 0.001 pg/mm3 |
| 10 ng/L | 0.01 pg/mm3 |
| 100 ng/L | 0.1 pg/mm3 |
| 1,000 ng/L | 1 pg/mm3 |
| 10,000 ng/L | 10 pg/mm3 |
Reverse conversion: Picogram per Cubic Millimeter to Nanogram per Liter
0.001 pg/mm3 × 1000 = 1 ng/L
0.001 picograms per cubic millimeter = 1 nanogram per liter.
nanograms per liter = picograms per cubic millimeter × 1000
For a page dedicated to this direction, see Picogram per Cubic Millimeter to Nanogram per Liter.
Understanding the Nanogram per Liter (ng/L)
Mass per volume density.
Understanding the Picogram per Cubic Millimeter (pg/mm3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many picograms per cubic millimeter are in 1 nanogram per liter?
1 nanogram per liter equals 0.001 picograms per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert nanogram per liter to picogram per cubic millimeter?
Multiply the nanogram per liter value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert picogram per cubic millimeter back to nanogram per liter?
Use the reverse factor: 1 picogram per cubic millimeter equals 1,000 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 picogram per cubic millimeter?
Picogram per Cubic Millimeter (pg/mm3) is a unit of density.
Is the nanogram per liter to picogram per cubic millimeter conversion exact?
Yes. Both nanogram per liter and picogram per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 0.001 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.