This article describes the formula syntax and usage of the AND function in Microsoft Excel.
Description
Returns TRUE if all its arguments evaluate to TRUE; returns FALSE if one or more arguments evaluate to FALSE.
One common use for the AND function is to expand the usefulness of other functions that perform logical tests. For example, the IF function performs a logical test and then returns one value if the test evaluates to TRUE and another value if the test evaluates to FALSE. By using the AND function as the logical_test argument of the IF function, you can test many different conditions instead of just one.
Syntax
AND(logical1, [logical2], ...)
The AND function syntax has the following arguments:

logical1 Required. The first condition that you want to test that can evaluate to either TRUE or FALSE.

logical2, ... Optional. Additional conditions that you want to test that can evaluate to either TRUE or FALSE, up to a maximum of 255 conditions.
Remarks

The arguments must evaluate to logical values, such as TRUE or FALSE, or the arguments must be arrays or references that contain logical values.

If an array or reference argument contains text or empty cells, those values are ignored.

If the specified range contains no logical values, the AND function returns the #VALUE! error value.
Examples
Copy the example data in the following table, and paste it in cell A1 of a new Excel worksheet. For formulas to show results, select them, press F2, and then press Enter. If you need to, you can adjust the column widths to see all the data.
Formula 
Description 
Result 
=AND(TRUE, TRUE) 
All arguments are TRUE 
TRUE 
=AND(TRUE, FALSE) 
One argument is FALSE 
FALSE 
=AND(2+2=4, 2+3=5) 
All arguments evaluate to TRUE 
TRUE 