Mass per volume density.
Micrograms per Liter to Picograms per Liter Converter — ug/L to pg/L
Convert Microgram per Liter (ug/L) to Picogram per Liter (pg/L) using the exact conversion factor (1 microgram per liter = 1,000,000 picogram per liter). See the formula, worked examples, and conversion table.
Micrograms per Liter to Picograms 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-6 / 1e-12.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Micrograms per Liter to Picograms per Liter
Microgram per Liter and Picogram 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
picograms per liter = micrograms per liter × 1000000
This factor comes from each unit's defined relationship to the category's base unit: 1 microgram per liter equals 0.000001 base units, and 1 picogram per liter equals 1e-12 base units, so dividing one by the other gives the direct microgram per liter-to-picogram per liter factor of 1000000.
Simple example
1 ug/L × 1000000 = 1,000,000 pg/L
1 microgram per liter = 1,000,000 picograms per liter.
Real-world example
1,000 ug/L × 1000000 = 1,000,000,000 pg/L
1,000 micrograms per liter = 1,000,000,000 picograms per liter.
Conversion table
| Microgram per Liter (ug/L) | Picogram per Liter (pg/L) |
|---|---|
| 0.1 ug/L | 100,000 pg/L |
| 1 ug/L | 1,000,000 pg/L |
| 10 ug/L | 10,000,000 pg/L |
| 100 ug/L | 100,000,000 pg/L |
| 1,000 ug/L | 1,000,000,000 pg/L |
| 10,000 ug/L | 10,000,000,000 pg/L |
Reverse conversion: Picogram per Liter to Microgram per Liter
1 pg/L × 0.000001 = 0.000001 ug/L
1 picogram per liter = 0.000001 micrograms per liter.
micrograms per liter = picograms per liter × 0.000001
For a page dedicated to this direction, see Picogram per Liter to Microgram per Liter.
Understanding the Microgram per Liter (ug/L)
Mass per volume density.
Understanding the Picogram per Liter (pg/L)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many picograms per liter are in 1 microgram per liter?
1 microgram per liter equals 1,000,000 picograms per liter, using the exact defined conversion factor rather than an estimate.
How do I convert microgram per liter to picogram per liter?
Multiply the microgram per liter value by 1000000. The converter above does this instantly to whatever precision you set.
How do I convert picogram per liter back to microgram per liter?
Use the reverse factor: 1 picogram per liter equals 0.000001 micrograms per liter. You can also use the swap control in the converter above to flip the direction instantly.
What is a microgram per liter?
Microgram per Liter (ug/L) is a unit of density.
What is a picogram per liter?
Picogram per Liter (pg/L) is a unit of density.
Is the microgram per liter to picogram per liter conversion exact?
Yes. Both microgram per liter and picogram per liter are defined by fixed standards rather than physical artifacts, so the factor of 1000000 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.