Micromolar to PPM Calculator

Formula

The formula to convert micromolar (µM) concentration to parts per million (ppm) is:

\[ \text{ppm} = \frac{\mu M \times MW}{1000} \]

Where:

Micromolar (µM): A unit of concentration representing one-millionth of a molar concentration, commonly used in biological and chemical sciences.
Parts per Million (ppm): A unit of measurement describing the concentration of a substance in a solution or mixture, denoting the number of parts of a substance in a million parts of the total solution or mixture.

Let's say the concentration (µM) is 500 and the molecular weight (MW) is 180 g/mol. Using the formula:

\[ \text{ppm} = \frac{500 \times 180}{1000} \]

We get:

\[ \text{ppm} = 90 \]

So, the concentration in parts per million is 90 ppm.