What is ERFC function in Excel?
The ERFC function is one of the Engineering functions of Excel.
It Returns the complementary error function.
We can find this function in Engineering category of the insert function Tab.
How to use ERFC function in excel
- Click on an empty cell (like F5).

2. Click on the fx icon (or press shift+F3).

3. In the insert function tab you will see all functions.
4. Select ENGINEERING category.
5. Select ERFC function.
6. Then select ok.

7. In the function arguments Tab you will see ERFC function.
8. X section is the lower bound for integrating ERF.
9. You will see the results in the formula result section.

Examples of ERFC function in Excel

ERFC related functions
- Use ERF function to calculate and returns the error function.
- Use ERF.PRECISE function to return the error function.
- Use ERFC.PRECISE function to return the complementary error function.