Enter the total depth (microns) and the total time (min) into the Etch Rate Calculator. The calculator will evaluate the Etch Rate.

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## Etch Rate Formula

The following two example problems outline the steps and information needed to calculate the Etch Rate.

ER = D / T

Variables:

- ER is the Etch Rate (microns/min)
- D is the total depth (microns)
- T is the total time (min)

To calculate the etch rate, divide the total depth by the total time.

## How to Calculate Etch Rate?

The following steps outline how to calculate the Etch Rate.

- First, determine the total depth (microns).
- Next, determine the total time (min).
- Next, gather the formula from above = ER = D / T.
- Finally, calculate the Etch Rate.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

total depth (microns) = 3

total time (min) = 20

ER = D / T** **= ?