Mass per volume density.
Picograms per Liter to Nanograms per Liter Converter — pg/L to ng/L
Convert Picogram per Liter (pg/L) to Nanogram per Liter (ng/L) using the exact conversion factor (1 picogram per liter = 0.001 nanogram per liter). See the formula, worked examples, and conversion table.
Picograms per Liter 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 1e-12 / 1e-9.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Picograms per Liter to Nanograms per Liter
Picogram per Liter 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 = picograms per liter × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 picogram per liter equals 1e-12 base units, and 1 nanogram per liter equals 1e-9 base units, so dividing one by the other gives the direct picogram per liter-to-nanogram per liter factor of 0.001.
Simple example
1 pg/L × 0.001 = 0.001 ng/L
1 picogram per liter = 0.001 nanograms per liter.
Real-world example
1,000 pg/L × 0.001 = 1 ng/L
1,000 picograms per liter = 1 nanogram per liter.
Conversion table
| Picogram per Liter (pg/L) | Nanogram per Liter (ng/L) |
|---|---|
| 0.1 pg/L | 0.0001 ng/L |
| 1 pg/L | 0.001 ng/L |
| 10 pg/L | 0.01 ng/L |
| 100 pg/L | 0.1 ng/L |
| 1,000 pg/L | 1 ng/L |
| 10,000 pg/L | 10 ng/L |
Reverse conversion: Nanogram per Liter to Picogram per Liter
0.001 ng/L × 1000 = 1 pg/L
0.001 nanograms per liter = 1 picograms per liter.
picograms per liter = nanograms per liter × 1000
For a page dedicated to this direction, see Nanogram per Liter to Picogram per Liter.
Understanding the Picogram per Liter (pg/L)
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 picogram per liter?
1 picogram per liter equals 0.001 nanograms per liter, using the exact defined conversion factor rather than an estimate.
How do I convert picogram per liter to nanogram per liter?
Multiply the picogram per liter value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert nanogram per liter back to picogram per liter?
Use the reverse factor: 1 nanogram per liter equals 1,000 picograms per liter. You can also use the swap control in the converter above to flip the direction instantly.
What is a picogram per liter?
Picogram per Liter (pg/L) is a unit of density.
What is a nanogram per liter?
Nanogram per Liter (ng/L) is a unit of density.
Is the picogram per liter to nanogram per liter conversion exact?
Yes. Both picogram per liter and nanogram per liter 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.