PPM to Molarity Calculator

To convert parts per million (ppm) to molarity, divide the ppm by the molar mass (mm) of the substance and then by 1000.

PPM to Molarity Calculator

Enter any 2 values to calculate the missing variable

PPM

mg/L g/m³

Molar Mass

g/mol kg/mol

Molarity

mol/L mmol/L

Calculate Reset

The PPM to Molarity Calculator is designed to instantly convert concentration units from parts per million (ppm) to molarity (M). This calculator is equally useful in chemistry and environmental sciences.

This conversion aids in understanding concentrations in chemical reactions, especially when comparing very dilute solutions. When you convert ppm to molarity, it becomes easier to work within the standard units of molarity used for most scientific calculations.

Formula

$$M = \frac{{\text{PPM}}}{{\text{mm} \times 1000}$$

Variable	Description
$\text{PPM}$	Concentration in parts per million
$\text{mm}$	Molar mass of the substance (g/mol)
$M$	Resulting concentration in molarity (M)

Solved Calculations

Example 1:

Step	Calculation
PPM	500
Molar Mass (mm)	18 g/mol (e.g., water)
Molarity Calculation	$\frac{500}{18 \times 1000} = 0.0278$ M

Answer: The molarity is 0.0278 M.

Example 2:

Step	Calculation
PPM	1000
Molar Mass (mm)	24 g/mol (e.g., Mg)
Molarity Calculation	$\frac{1000}{24 \times 1000} = 0.0417$ M

Answer: The molarity is 0.0417 M.

What is a PPM to Molarity Calculator?

The PPM to Molarity Calculator is a user-oriented tool. This tool comes handy while converting parts per million (PPM) into molarity, a measure of concentration in moles per liter (mol/L).

This conversion is commonly experienced in chemistry and environmental science, where concentrations of solutes in solutions need precise measurement for research or analysis.

To perform the conversion, the calculator uses both the PPM value and the molar mass of the solute. For instance, if you have a solution with a concentration of 1000 PPM and a molar mass of 50 g/mol, the resulting molarity is 0.02 mol/L.

Simply inputting these values in the calculator streamlines this process, providing accurate molarity without manual calculations.

Final Words:

In the end, the PPM to Molarity Calculator is ideal for quick and precise conversions, supporting clear and straightforward concentration measurements across scientific applications.