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Position of 2nd 3rd etc instance of character

Excel formula: Position of 2nd 3rd etc instance of character
Generic formula 
=FIND("~",SUBSTITUTE(text,char,"~",instance))
Explanation 

To get the position of the 2nd, 3rd, 4th, etc. instance of a specific character inside a text string, you can use the FIND and SUBSTITUTE functions.

In the example shown, the formula in E4 is:

=FIND("~",SUBSTITUTE(B4,"x","~",D4))

How this formula works

At the core, this formula uses the fact that the SUBSTITUTE function understands "instance", supplied as an optional forth argument called "instance_num". This means you can use the SUBSTITUTE function to replace a specific instance of a character in a text string.  So:

SUBSTITUTE(B4,"x","~",D4)

replaces only the 2nd instance (2 comes from D4) of "x" in text in B4, with "~" character. The result looks like this:

100x15~50

Next, FIND locates the "~" inside this string and returns the position, which is 7 in this case.

Note: we use "~" in this case only because it rarely occurs in other text. You can use any character that you know won't appear in the text.

Author 
Dave Bruns

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