# Formula Errors

##### | #NAME? | #VALUE! | #DIV/0! | #REF! | #N/A | #NUM! | #NULL! | #SPILL!

This chapter teaches you how to deal with some common **formula errors** in **Excel**. Let's start simple.

### #####

When your cell contains this **error code**, the column isn't wide enough to display the value.

1. Click on the right border of the column A header and increase the column width.

Tip: double click the right border of the column A header to automatically fit the widest entry in column A.

### #NAME?

The #NAME? error occurs when Excel does not recognize text in a formula.

1. Simply correct SU to SUM.

### #VALUE!

Excel displays the #VALUE! error when a formula has the wrong type of argument.

1a. Change the value of cell A3 to a number.

1b. Use a function to ignore cells that contain text.

### #DIV/0!

Excel displays the #DIV/0! error when a formula tries to divide a number by 0 or an empty cell.

1a. Change the value of cell A2 to a value that is not equal to 0.

1b. Prevent the error from being displayed by using the logical function IF.

Explanation: if cell A2 equals 0, an empty string ("") is displayed. If not, the result of the formula A1/A2 is displayed.

### #REF!

Excel displays the #REF! error when a formula refers to a cell that is not valid.

1. Cell C1 references cell A1 and cell B1.

2. Delete column B. To achieve this, right click the column B header and click Delete.

3. Select cell B1. The reference to cell B1 is not valid anymore.

4. To fix this error, you can either delete +#REF! in the formula of cell B1 or you can undo your action by pressing CTRL + z

### #N/A

The #N/A error appears when the VLOOKUP function (or XLOOKUP, MATCH, etc.) can't find a match.

1. In the example below, ID 28 cannot be found.

2. Use the IFNA function to replace the #N/A error with a friendly message.

### #NUM!

Excel shows the #NUM! error when a formula contains invalid numeric values.

1. For example, the SQRT function below cannot calculate the square root of a negative number.

2. Change the number in cell A1 to a positive number.

### #NULL!

The intersect operator (single space) returns the intersection of two ranges. When two ranges don't intersect, Excel displays the #NULL! error.

1. The formula below returns #NULL! because the two ranges don't intersect.

2. The formula below doesn't return the #NULL error.

Note: =SUM(F2:G2) produces the exact same result!

### #SPILL!

If something is blocking a spill range, Excel displays the #SPILL! error.

1. Simply empty cell C6 to fix the #SPILL error.

Note: this dynamic array function, entered into cell C1, fills multiple cells. Wow! This behavior in Excel 365/2021 is called spilling.