Enter the absorbance, path length, and extinction coefficient into the calculator to determine the concentration.

- Time of Concentration Calculator
- Extinction Coefficient Calculator
- Beer-Lambert Law Calculator w/ Formula

## Concentration from Absorbance Formula

The following formula is used to calculate a concentration from absorbance.

C = A / (L * e)

- Where A is the absorbance
- L is the path length
- e is the extinction coefficient

To calculate the concentration from absorbance, divide the absorbance by the product of the path length and extinction coefficient.

## Concentration Definition

A concentration is defined as the total amount of a substance in a given space.

## Concentration from Absorbance Example

How to calculate concentration from absorbance?

**First, determine the absorbance.**Calculate the absorbance.

**Next, determine the path length.**Measure the total path length of absorbance.

**Next, determine the extinction coefficient.**Calculate the extinction coefficient.

**Finally, calculate the concentration.**Calculate the concentration using the equation above.

## FAQ

**What is a concentration?**

A concentration is a measure of the total amount of substance contained is a certain area or volume.