Parts per million (ppm) to milligrams per litre (mg/L) and molarity calculators

Parts per million (ppm) is the number of parts of a substance in a million parts of mixture. Milligrams per liter, is a measure of how many milligrams of the substance can be found in a liter of the mixture.

This calculator allows you to convert between parts per million (ppm), milligrams per liter (mg/L) and the molar concentration (M).

Parts per million (ppm) is a measure of how many parts of a substance are in a million parts of the mixture.

Milligrams per liter (mg/L) is a measure of the concentration, it is how many milligrams of a substance are in a liter of the mixture.                                   

Molarity (M) expresses the number of moles in a liter of a substance and is described in M or mol/L.