Find longest text string with criteria

In this tutorial, we will talk about how to look for the longest text string in a column or row with criteria in Excel with the help of INDEX, MATCH, LEN and MAX functions.

How to find the longest test string with criteria in Excel?

To quickly find the person who comes from America with the longest name listed in the name range above, a formula that combines the INDEX, MATCH, LEN and MAX functions will help you in this way: The MAX function will retrieve the largest value in the range of string lengths provided by the LEN function. Then MATCH will locate the position of the first longest value in the range and INDEX will retrieve the value at the corresponding position.

Generic syntax

=INDEX(return_range,MATCH(MAX(LEN(return_range)*(criteria_range=criteria_value)),LEN(return_range)*(criteria_range=criteria_value),0))

√ Note: This is an array formula that requires you to enter with Ctrl + Shift + Enter.

To find the person who comes from America with the longest name, please copy or enter the formulas below in the cell F6, and press Ctrl + Shift + Enter to get the result:

=INDEX(B5:B11,MATCH(MAX(LEN(B5:B11)*(C5:C11="America")),LEN(B5:B11)*(C5:C11="America"),0))

Or, use a cell reference to make the formula dynamic:

=INDEX(B5:B11,MATCH(MAX(LEN(B5:B11)*(C5:C11=F5)),LEN(B5:B11)*(C5:C11=F5),0))

Explanation of the formula

=INDEX(B5:B11,MATCH(MAX(LEN(B5:B11)*(C5:C11=F5)),LEN(B5:B11)*(C5:C11=F5),0))

• LEN(B5:B11)*(C5:C11=F5): The LEN function returns an array of the lengths of each name in B5:B11 like this: {5;5;6;3;4;8;5}; The part (C5:C11=F5) checks each value in range C5:C11 if they equal to the value in F5, and generates an array like this: {FALSE;FALSE;TRUE;FALSE;TRUE;FALSE;TRUE}, which will turn to {0;0;1;0;1;0;1} since it will be multiplied. And this is what we will get after the multiplication: {0;0;6;0;4;0;5}.
• MAX(LEN(B5:B11)*(C5:C11=F5)) = MAX({0;0;6;0;4;0;5}): The MAX function then returns the largest value from the array {0;0;6;0;4;0;5}, which is 6.
• MATCH(MAX(LEN(B5:B11)*(C5:C11=F5)),LEN(B5:B11)*(C5:C11=F5),0) = MATCH(6,{0;0;6;0;4;0;5},0): The match_type 0 forces the MATCH function to find the position of the first exact number 6 in the array {0;0;6;0;4;0;5}. So, it returns 3 since the number is at the 3rd position.
• INDEX(B5:B11,MATCH(MAX(LEN(B5:B11)*(C5:C11=F5)),LEN(B5:B11)*(C5:C11=F5),0)) = INDEX(B5:B11,3): The INDEX function returns the 3rd value in the name range B5:B11, which is Oliver.

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