# PPM Calculator

Enter the number of parts and the total to calculate the concentration in parts per million.

## PPM:

## How to Calculate Parts per Million

Concentration measurements are crucial in chemistry for describing the amount of a substance relative to another in a mixture or solution. One common method of expressing concentration is in parts per million (expressed ppm), which indicates the number of parts of a substance in a million parts of the total mixture or solution.

One part-per-million denotes one part of solute per one million parts of the solution.

To calculate the concentration of a substance, you’ll need to identify the mass of solute and the mass of the solution. Then, you can use a simple formula to calculate the concentration in parts per million.

### PPM Formula

The concentration in parts per million can be calculated using the following formula:

ppm = mass of solute / mass of solution × 1,000,000

Thus, the concentration in parts per million is equal to the mass of the solute divided by the total mass of the solution, times one million.

You can use our ppm converter to convert this concentration value to a decimal, percentage, or other concentration equivalent.