Excel INDEX Function - Microsoft Excel INDEX Function Tutorial
Microsoft Excel INDEX Function Tutorial
Microsoft Excel INDEX Function Tutorial
What is the Microsoft Excel INDEX Function (Array Format)?
The INDEX function is a computer program that you run from a worksheet cell formula. It returns a value from the row and column you designate within a worksheet range or array. In other words, it is table lookup just like VLOOKUP except you tell it what row and column to return information from within the table (i.e. range or array). In VLOOKUP you only told it the column to return the info from. You run the INDEX worksheet function by typing its name in a formula then followed by the information it is suppose to use. The INDEX worksheet function is used in applications when you have to look up prices, name information, scientific data anything that is contained in a table. Its advantage over VLOOKUP is that it can be used in conjunction with the MATCH function thus allowing what is looked up to be elsewhere then the first column of the range or array (i.e. table). It can also be used to merge two tables together transferring information from one to the other just like VLOOKUP.
How Do You Type the INDEX Worksheet Function in a Formula?
Whenever you type a formula in a worksheet cell, this is called syntax or grammar. The general INDEX function syntax has a format like this when you type it in a worksheet cell:
Where reference,[row_num],[column_num] are called the function argument list. Remember, you are running a computer program at this point so the program needs information to operate and that is why there is an argument list. When you see an argument list and you see square brackets [ ] around the argument name, this means the argument is optional and you do not have to include it when typing unless you need it. So for the syntax above, you need to include 2 arguments for the INDEX worksheet function when typing it in a worksheet cell formula in order for it to calculate correctly. If row_num is omitted you need to put the col_num. If the col_num argument is omitted you need to put the row_num argument. What argument values can be used are discussed below. Remember functions expect certain things in their argument lists, if you do not put the correct information in the list they will generate an error when run.
INDEX Function Argument Definitions
How Do You Run the INDEX Function?
Since the INDEX function is a computer program, it runs when you press Enter to enter the formula that contains it. If any of the arguments are wrong, the function will return an error.
What Do I Type for an INDEX Function Argument?
When typing the INDEX function in a worksheet cell formula, you need to replace the argument list with arguments separating each with a comma (,). Some typical arguments you can use are:
* It is possible to name a cell or group of cells on a worksheet and use that name in place of a range reference or cell reference. Consult Excel help on how to name a cell.
Additional INDEX Function Examples
The worksheet seen below contains some typical worksheet formulas that run the INDEX worksheet function. Pay close attention to the argument list and the syntax used to write the formula.
Things to Know About the INDEX Function
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