Extract Number From Text String

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Extract Number From Text String


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Get Numbers From Alphanumeric Text in Excel

This UDF will extract the numeric portion from a alphanumeric Text String. 

The Code

Function ExtractNumber(rCell As Range, _
     Optional Take_decimal As Boolean, Optional Take_negative As Boolean) As Double


Dim iCount As Integer, i As Integer, iLoop As Integer

    Dim sText As String, strNeg As String, strDec As String

    Dim lNum As String

    Dim vVal, vVal2



     'Written by OzGrid Business Applications



     'Extracts a number from a cell containing text and numbers.


    sText = rCell

    If Take_decimal = True And Take_negative = True Then

        strNeg = "-" 'Negative Sign MUST be before 1st number.

        strDec = "."

    ElseIf Take_decimal = True And Take_negative = False Then

        strNeg = vbNullString

        strDec = "."

    ElseIf Take_decimal = False And Take_negative = True Then

        strNeg = "-"

        strDec = vbNullString

    End If

    iLoop = Len(sText)


            For iCount = iLoop To 1 Step -1

            vVal = Mid(sText, iCount, 1)



                If IsNumeric(vVal) Or vVal = strNeg Or vVal = strDec Then

                    i = i + 1

                    lNum = Mid(sText, iCount, 1) & lNum

                        If IsNumeric(lNum) Then

                            If CDbl(lNum) < 0 Then Exit For


                          lNum = Replace(lNum, Left(lNum, 1), "", , 1)

                        End If

                End If


                If i = 1 And lNum <> vbNullString Then lNum = CDbl(Mid(lNum, 1, 1))

            Next iCount



    ExtractNumber = CDbl(lNum)


End Function

To use this UDF push Alt+F11 and go Insert>Module and paste in the code. Push Alt+Q and save. The Function will appear under "User Defined" in the Paste Function (Shift+F3).

It should be noted that the ExtractNumber Function has 2 optional arguments (Take_decimal and Take_negative). These are both False if omitted. See the table below to see how alphanumeric text is treated.

Alphanumeric Text Formula Result
a-bg-12909- =ExtractNumber(A1,,TRUE) -12909
a-bg-12909- =ExtractNumber(A2) 12909
a.a1.2... =ExtractNumber(A3,TRUE) 1.2
a.a1.2... =ExtractNumber(A4) 12
a.a-1.2…. =ExtractNumber(A5,TRUE,TRUE) -1.2
abg1290.11 =ExtractNumber(A6,TRUE) 1290.11
abg129013Agt =ExtractNumber(A7) 129013
abg129012 =ExtractNumber(A8) 129013

See also:

Excel: Password Protect/Unprotect All Excel Worksheets in One Go
Excluding Headings/Headers From the Current Region/Table
Excel: Get Text From Excel Cell Comments
Excel: Get Data From Closed Excel Workbooks
Excel: Get Last Word From Text String


See also Index to Excel VBA Code and Index to Excel Freebies and Lesson 1 - Excel Fundamentals and Index to how to… providing a range of solutions.


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