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Concentration - Solution Converter
Result
... Milligram per liter = ... Part per million
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Milligram per liter to Part per million Converter
Use this page to convert milligram per liter values into part per million, with background details, formulas, a worked example, and a quick conversion table.
Conversion formula
1 mg/L = 1 ppm
1 ppm = 1 mg/L
Example: 0.001 mg/L = 0.001 ppm
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Milligram per liter
One milligram per liter is equal to one millionth of a kilogram per liter (1e-6 kilograms per liter).
History: Milligrams per liter became standard for dilute aqueous concentrations.
Current use: Used for drinking water, wastewater, environmental chemistry, and low-level contaminants.
Also written as mg/L.
Part per million
One part per million is represented as 0.000001 kilograms per liter in this converter.
History: Parts-per-million notation is common for dilute concentrations where ratios are easier to read.
Current use: Used for water quality, environmental reporting, chemistry, and product concentration limits.
Also written as ppm.
Milligram per liter to Part per million table
| Milligram per liter [mg/L] | Part per million [ppm] |
|---|---|
| 0.01 mg/L | 0.01 ppm |
| 0.1 mg/L | 0.1 ppm |
| 1 mg/L | 1 ppm |
| 2 mg/L | 2 ppm |
| 5 mg/L | 5 ppm |
| 10 mg/L | 10 ppm |
| 20 mg/L | 20 ppm |
| 50 mg/L | 50 ppm |
| 100 mg/L | 100 ppm |
Frequently asked questions
How many Part per million (ppm) are in one Milligram per liter (mg/L)?
One Milligram per liter equals 1 Part per million.
How do you convert Milligram per liter to Part per million?
Multiply the Milligram per liter value by 1 to get the result in Part per million.
How do you convert Part per million back to Milligram per liter?
Multiply the Part per million value by 1 to get back to Milligram per liter.
What is 0.001 Milligram per liter in Part per million?
0.001 Milligram per liter equals 0.001 Part per million.