Enter the concentration in milligrams per liter (mg/L) into the calculator to convert it to parts per billion (ppb).

Mg/L to Ppb Conversion Formula

The following formula is used to convert the concentration from mg/L to ppb.

ppb = mg/L * 1000

Variables:

  • ppb is the concentration in parts per billion
  • mg/L is the concentration in milligrams per liter

To convert mg/L to ppb, multiply the concentration in mg/L by 1000.

What is Mg/L and Ppb?

Milligrams per liter (mg/L) is a unit of concentration commonly used in chemistry and water quality measurements. It represents the mass of a substance in milligrams dissolved in one liter of liquid. Parts per billion (ppb) is another unit of concentration that indicates the number of parts of a substance in a billion parts of the total. It is often used for measuring very low concentrations of pollutants in water, air, or soil.

How to Convert Mg/L to Ppb?

The following steps outline how to convert the concentration from mg/L to ppb.


  1. First, determine the concentration in milligrams per liter (mg/L).
  2. Next, use the conversion formula: ppb = mg/L * 1000.
  3. Finally, calculate the concentration in parts per billion (ppb).
  4. After inserting the value and calculating the result, check your answer with the calculator above.

Example Problem :

Use the following variable as an example problem to test your knowledge.

Concentration in milligrams per liter (mg/L) = 2.5

Using the formula, the concentration in parts per billion (ppb) is calculated as:

ppb = 2.5 mg/L * 1000 = 2500 ppb