## Filter words containing a given string in a cell range [UDF]

The image above demonstrates a User Defined Function thatÂ extracts all words containing a given string that you can specify. In this case it is a @ sign. A User Defined Function is a custom function that you can build yourself in the visual basic editor.

Example, cell range B1:M50 contains random sentences, I have inserted some random emails in this range, see image above.

Array formula in cell range B3:B7:

To enter an array formula, type the formula in a cell then press and hold CTRL + SHIFT simultaneously, now press Enter once. Release all keys.

The formula bar now shows the formula with aÂ beginning and ending curly bracket telling you that you entered the formula successfully. Don't enter the curly brackets yourself.

### VBA code

'Name function Function FilterWords(rng As Range, str As String) As Variant() 'Declare variables Dim x As Variant, Wrds() As Variant, Cells_row As Long Dim Cells_col As Long, Words As Long, y() As Variant 'Redimension variable ReDim y(0) 'Save values in range to array variable Wrds = rng.Value 'Iterate through array variable For Cells_row = LBound(Wrds, 1) To UBound(Wrds, 1) For Cells_col = LBound(Wrds, 2) To UBound(Wrds, 2) 'Extract words in cell to an array x = Split(Wrds(Cells_row, Cells_col)) 'Iterate through word array For Words = LBound(x) To UBound(x) 'Check if value in array is equal to the given string If InStr(x(Words), str) Then 'Save value to another array y(UBound(y)) = x(Words) 'Increase containers in array by 1 ReDim Preserve y(UBound(y) + 1) End If Next Words Next Cells_col Next Cells_row 'Decrease containers in array by 1 ReDim Preserve y(UBound(y) - 1) 'Return array FilterWords = Application.Transpose(y) End Function

### Where to do I copy the code?

- Press Alt-F11 to open visual basic editor
- Press with left mouse button on Module on the Insert menu
- Copy and paste the user defined function to module
- Exit visual basic editor

### Filter emails category

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## Functions in this article

More than 1300 Excel formulas

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### 2 Responses to “Filter words containing a given string in a cell range [UDF]”

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I notice that your UDF requires spaces to delimit the email address. For example, if the email address is surrounded by parentheses or adjacent to punctuation marks, those will remain attached to the returned email addresses. This is because you used a general word parser as the basis for your UDF. I had a robust email address parser function that I wrote awhile ago, so I wrote a front-end function (the UDF) that repeatedly calls it as needed; doing this makes the UDF return only the email addresses no matter what other delimiting characters surround them. Just copy the following two functions into a standard Module, then select a column of cells (more than you think email addresses exist), enter this formula in the Formula Bar (change the range as necessary)...

=FindEmailAddresses(B1:M50)

and then press CTRL+SHIFT+ENTER to commit the array formula. By the way, the GetEmailAddress function below can be used as a stand-alone function by itself... it returns a single email address (the first it finds in the text passed to it). Okay, here are the functions...

Function FindEmailAddresses(Rng As Range) As Variant()

Dim Temp As String, Cell As Range, EM() As Variant

ReDim EM(0)

For Each Cell In Rng

Temp = Cell.Value

Do While InStr(Temp, "@")

EM(UBound(EM)) = GetEmailAddress(Temp)

Temp = Replace(Temp, "@", "", 1, 1)

ReDim Preserve EM(UBound(EM) + 1)

Loop

Next

ReDim Preserve EM(UBound(EM) - 1)

FindEmailAddresses = WorksheetFunction.Transpose(EM)

End Function

Function GetEmailAddress(ByVal S As String) As String

Dim X As Long, AtSign As Long

Dim Locale As String, DomainPart As String

Locale = "[A-Za-z0-9.!#$%&'*/=?^_`{|}~+-]"

Domain = "[A-Za-z0-9._-]"

AtSign = InStr(S, "@")

For X = AtSign To 1 Step -1

If Not Mid(" " & S, X, 1) Like Locale Then

S = Mid(S, X)

If Left(S, 1) = "." Then S = Mid(S, 2)

Exit For

End If

Next

AtSign = InStr(S, "@")

For X = AtSign + 1 To Len(S) + 1

If Not Mid(S & " ", X, 1) Like Domain Then

S = Left(S, X - 1)

If Right(S, 1) = "." Then S = Left(S, Len(S) - 1)

GetEmailAddress = S

Exit For

End If

Next

End Function

Rick Rothstein (MVP - Excel),

Thank you for your valuable comment! I tried your functions and they work as you described!