Convert pg/mL to ng/mg, ng/mL, ng/L or ng/dL. Enter a concentration in pg/mL or another unit; ng/mg assumes a water-like density of 1 g/mL.
Quick overview: pg/mL is a mass-per-volume unit, while ng/mg is a mass-per-mass unit.
Using a water-like density assumption, 1 mL ≈ 1000 mg and 1 ng = 1000 pg.
This gives the fixed relationship:
ng/mg = pg/mL × 0.000001
- 1 pg/mL = 0.000001 ng/mg
- 1,000 pg/mL = 0.001 ng/mg
- 10,000 pg/mL = 0.01 ng/mg
- 1,000,000 pg/mL = 1 ng/mg
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pg/mL to ng/mg Formula
The following formula is used to convert a concentration from picograms per milliliter to nanograms per milligram.
Variables:
- NG/MG is the concentration in nanograms per milligram
- PG/ML is the concentration in picograms per milliliter
- 0.000001 is the conversion factor, assuming 1 mL ≈ 1000 mg
To calculate ng/mg, multiply the concentration in pg/mL by 0.000001. This combines the facts that 1 nanogram equals 1000 picograms and, for water-like solutions, 1 milliliter weighs about 1000 milligrams.
What is pg/mL to ng/mg Conversion?
Picograms per milliliter (pg/mL) describe a very small mass of substance in a given liquid volume, while nanograms per milligram (ng/mg) express mass relative to mass. Converting between these units is common in laboratory, toxicology, and pharmacology settings when results are reported in different formats. Under the common approximation that the liquid has a density close to water, the conversion becomes a fixed multiplier: 1 pg/mL = 0.000001 ng/mg.
How to Convert pg/mL to ng/mg?
The following steps outline how to convert pg/mL to ng/mg.
- First, determine the concentration in picograms per milliliter (pg/mL).
- Next, use the conversion factor 0.000001.
- Multiply the pg/mL value by 0.000001 to calculate the concentration in ng/mg.
- After calculating the result, check your answer with the converter above.
Example Problem:
Use the following example to test your knowledge.
Concentration = 5,000 pg/mL
Result = 5,000 × 0.000001 = 0.005 ng/mg
pg/mL to ng/mg Conversion Table
The table below shows several common conversions using the relationship ng/mg = pg/mL × 0.000001.
| Concentration (pg/mL) | Conversion Factor | Result (ng/mg) |
|---|---|---|
| 1 | × 0.000001 | 0.000001 |
| 1,000 | × 0.000001 | 0.001 |
| 10,000 | × 0.000001 | 0.01 |
| 100,000 | × 0.000001 | 0.1 |
| 1,000,000 | × 0.000001 | 1 |
Keep in mind that this conversion depends on the assumption that the solution has a density close to 1 g/mL. If the liquid is significantly more or less dense than water, a more specific density-based conversion may be needed.
How to convert between pg, ng, µg, mg and g
Choose Convert mass units for a measurement such as picograms (pg), with no volume unit. Enter the mass, select its unit, then choose the output unit and select Calculate. Use Convert concentration for measurements such as pg/mL.
Multiply by the number of grams in the starting unit and divide by the number of grams in the output unit. A picogram is 10−12 g, a nanogram is 10−9 g, a microgram is 10−6 g and a milligram is 10−3 g.
Example: To convert 1,000 pg to ng, enter 1,000, select pg and choose ng as the output unit. Divide by 1,000 to get 1 ng.
