VBA includes several builtin operators and functions, which can be used for building expressions or performing tasks in your VBA code.
The builtin VBA operators consist of mathematical operators, string operators, comparison operators and logical operators. The different types of Operators are discussed individually below.
The main Mathematical VBA operators are listed in the table below.
The precedences that are listed alongside the operators are the defaults, which are applied in the absence of brackets. However, the order in which the VBA operators are applied can be controlled by adding brackets to an expression:
Operator  Action  Precedence (1=top; 5=bottom) 

^  The power operator  1 
*  The multiplication operator  2 
/  The division operator  2 
\  The integer division operator (divides two numbers and returns the integer result  e.g. 7\4 gives a result of 1)  3 
Mod  The modulus operator (divides two numbers and returns the remainder  e.g. 8 Mod 3 gives a result of 2)  4 
+  The addition operator  5 
  The subtraction operator  5 
The concatenate operator & can be used to join strings together.
Operator  Action 

&  The concatenate operator (e.g. "A" & "B" gives the result "AB") 
Comparison operators compare two numbers or strings and return a logical (True or False) result. The main Excel VBA comparison operators are listed in the table below:
Operator  Action 

=  Equal To 
< >  Not Equal To 
<  Less Than 
>  Greater Than 
<=  Less Than or Equal To 
>=  Greater Than or Equal To 
Logical operators also return a logical (True or False) result. The main Excel VBA logical operators are listed in the table below:
Operator  Action 

And  Logical Operator And (e.g. the expression 'A And B' returns True if BOTH A AND B are true and returns False otherwise) 
Or  Logical Operator Or (e.g. the expression 'A Or B' returns True if EITHER A OR B is true and returns False otherwise) 
Not  Negates an evaluation (e.g. the expression 'Not A' returns True if A is false and returns False if A is true) 
It should be noted that the above tables do not provide an exhaustive list of VBA operators. A more complete list can be obtained from the Visual Basic Developer Center Website
VBA also has a large number of builtin functions that are available to be used in your VBA code. Some of the more commonly used VBA functions are listed below:
Function  Action  

Date  Returns the current system date.  
Time  Returns the current system time.  
Now  Returns the current system date and time.  
Int 
Returns the integer part of a numeric value.


Abs 
Returns the absolute value of a supplied number.


InStr 
Returns the position of a substring within a string.


Len 
Returns the length of a supplied text string.


Left 
Returns a specified number of characters from the start of a supplied string.


Mid 
Returns a specified number of characters from the middle of a supplied string.


Right 
Returns a specified number of characters from the end of a supplied string.


UBound  Returns the upper subscript of a supplied array. 
Note that the above list only provides a small selection of some of the more commonly used Excel Visual Basic builtin functions. For a more detailed list of builtin VBA functions, see the VBA Functions page.