Mass per volume density.
Picograms per Liter to Carats per Milliliter Converter — pg/L to ct/mL
Convert Picogram per Liter (pg/L) to Carat per Milliliter (ct/mL) using the exact conversion factor (1 picogram per liter = 5e-15 carat per milliliter). See the formula, worked examples, and conversion table.
Picograms per Liter to Carats 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-12 / 200.
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 Carats per Milliliter
Picogram per Liter and Carat 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
carats per milliliter = picograms per liter × 5e-15
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 carat per milliliter equals 200 base units, so dividing one by the other gives the direct picogram per liter-to-carat per milliliter factor of 5e-15.
Simple example
1 pg/L × 5e-15 = 5e-15 ct/mL
1 picogram per liter = 5e-15 carats per milliliter.
Real-world example
1,000 pg/L × 5e-15 = 5e-12 ct/mL
1,000 picograms per liter = 5e-12 carats per milliliter.
Conversion table
| Picogram per Liter (pg/L) | Carat per Milliliter (ct/mL) |
|---|---|
| 0.1 pg/L | 5e-16 ct/mL |
| 1 pg/L | 5e-15 ct/mL |
| 10 pg/L | 5e-14 ct/mL |
| 100 pg/L | 5e-13 ct/mL |
| 1,000 pg/L | 5e-12 ct/mL |
| 10,000 pg/L | 5e-11 ct/mL |
Reverse conversion: Carat per Milliliter to Picogram per Liter
5e-15 ct/mL × 2e+14 = 1 pg/L
5e-15 carats per milliliter = 1 picograms per liter.
picograms per liter = carats per milliliter × 2e+14
For a page dedicated to this direction, see Carat per Milliliter to Picogram per Liter.
Understanding the Picogram per Liter (pg/L)
Mass per volume density.
Understanding the Carat per Milliliter (ct/mL)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many carats per milliliter are in 1 picogram per liter?
1 picogram per liter equals 5e-15 carats per milliliter, using the exact defined conversion factor rather than an estimate.
How do I convert picogram per liter to carat per milliliter?
Multiply the picogram per liter value by 5e-15. The converter above does this instantly to whatever precision you set.
How do I convert carat per milliliter back to picogram per liter?
Use the reverse factor: 1 carat per milliliter equals 2e+14 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 carat per milliliter?
Carat per Milliliter (ct/mL) is a unit of density.
Is the picogram per liter to carat per milliliter conversion exact?
Yes. Both picogram per liter and carat per milliliter are defined by fixed standards rather than physical artifacts, so the factor of 5e-15 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.