Chemical concentration conversion factors are numerical values used to convert concentration measurements from one unit to another. These conversion factors allow you to express concentrations in different units while maintaining equivalence.

For example, if you have a concentration measurement in molarity (M) and need to convert it to molality (m), you would use a conversion factor based on the density of the solvent to convert between the volume-based unit (molarity) and the mass-based unit (molality).

Similarly, if you have a concentration measurement in mass percent (% m/m) and need to convert it to parts per million (ppm), you would use a conversion factor based on the density of the solution and the molecular weight of the solute to convert between the mass-based unit and the unit expressing parts per million.

The specific conversion factors depend on the units involved and may vary depending on the substances and solvents being used. They are typically derived from the relationships between the different concentration units and may involve factors such as density, molecular weight, and volume-to-mass conversions.

These conversion factors are important for accurately converting concentration measurements between different units and ensuring consistency and compatibility in chemical analyses and applications.

The Table provides conversions between concentration units such as milligrams per liter, grams per liter, grams per meter (cubed) , parts per million and fluid ounces per gallon.