8/06/2012

Convert currency into words

Question: In Access, how can I convert currency to words?
For example,
$100 should read as "one hundred exactly"

Answer: To convert currency into words, you'll need to open your Access database and create a new module.

Then paste into the new module the following two functions:
Function English(ByVal N As Currency) As String
    Const Thousand = 1000@
    Const Million = Thousand * Thousand
    Const Billion = Thousand * Million
    Const Trillion = Thousand * Billion
    If (N = 0@) Then English = "zero": Exit Function
    Dim Buf As String: If (N < 0@) Then Buf = "negative " Else Buf = ""
    Dim Frac As Currency: Frac = Abs(N - Fix(N))
    If (N < 0@ Or Frac <> 0@) Then N = Abs(Fix(N))
    Dim AtLeastOne As Integer: AtLeastOne = N >= 1
    If (N >= Trillion) Then
        Debug.Print N
        Buf = Buf & EnglishDigitGroup(Int(N / Trillion)) & " trillion"
        N = N - Int(N / Trillion) * Trillion
        If (N >= 1@) Then Buf = Buf & " "
    End If
    If (N >= Billion) Then
        Debug.Print N
        Buf = Buf & EnglishDigitGroup(Int(N / Billion)) & " billion"
        N = N - Int(N / Billion) * Billion
        If (N >= 1@) Then Buf = Buf & " "
    End If
    If (N >= Million) Then
        Debug.Print N
        Buf = Buf & EnglishDigitGroup(N \ Million) & " million"
        N = N Mod Million
        If (N >= 1@) Then Buf = Buf & " "
    End If
    If (N >= Thousand) Then
        Debug.Print N
        Buf = Buf & EnglishDigitGroup(N \ Thousand) & " thousand"
        N = N Mod Thousand
        If (N >= 1@) Then Buf = Buf & " "
    End If
    If (N >= 1@) Then
        Debug.Print N
        Buf = Buf & EnglishDigitGroup(N)
    End If
    If (Frac = 0@) Then
        Buf = Buf & " exactly"
    ElseIf (Int(Frac * 100@) = Frac * 100@) Then
        If AtLeastOne Then Buf = Buf & " and "
        Buf = Buf & Format$(Frac * 100@, "00") & "/100"
    Else
        If AtLeastOne Then Buf = Buf & " and "
        Buf = Buf & Format$(Frac * 10000@, "0000") & "/10000"
    End If
    English = Buf
End Function

Private Function EnglishDigitGroup(ByVal N As Integer) As String
    Const Hundred = " hundred"
    Const One = "one"
    Const Two = "two"
    Const Three = "three"
    Const Four = "four"
    Const Five = "five"
    Const Six = "six"
    Const Seven = "seven"
    Const Eight = "eight"
    Const Nine = "nine"
    Dim Buf As String: Buf = ""
    Dim Flag As Integer: Flag = False
    Select Case (N \ 100)
        Case 0: Buf = "": Flag = False
        Case 1: Buf = One & Hundred: Flag = True
        Case 2: Buf = Two & Hundred: Flag = True
        Case 3: Buf = Three & Hundred: Flag = True
        Case 4: Buf = Four & Hundred: Flag = True
        Case 5: Buf = Five & Hundred: Flag = True
        Case 6: Buf = Six & Hundred: Flag = True
        Case 7: Buf = Seven & Hundred: Flag = True
        Case 8: Buf = Eight & Hundred: Flag = True
        Case 9: Buf = Nine & Hundred: Flag = True
    End Select
    If (Flag <> False) Then N = N Mod 100
    If (N > 0) Then
        If (Flag <> False) Then Buf = Buf & " "
    Else
        EnglishDigitGroup = Buf
        Exit Function
    End If
    Select Case (N \ 10)
        Case 0, 1: Flag = False
        Case 2: Buf = Buf & "twenty": Flag = True
        Case 3: Buf = Buf & "thirty": Flag = True
        Case 4: Buf = Buf & "forty": Flag = True
        Case 5: Buf = Buf & "fifty": Flag = True
        Case 6: Buf = Buf & "sixty": Flag = True
        Case 7: Buf = Buf & "seventy": Flag = True
        Case 8: Buf = Buf & "eighty": Flag = True
        Case 9: Buf = Buf & "ninety": Flag = True
    End Select
    If (Flag <> False) Then N = N Mod 10
    If (N > 0) Then
        If (Flag <> False) Then Buf = Buf & "-"
    Else
        EnglishDigitGroup = Buf
        Exit Function
    End If
    Select Case (N)
        Case 0:
        Case 1: Buf = Buf & One
        Case 2: Buf = Buf & Two
        Case 3: Buf = Buf & Three
        Case 4: Buf = Buf & Four
        Case 5: Buf = Buf & Five
        Case 6: Buf = Buf & Six
        Case 7: Buf = Buf & Seven
        Case 8: Buf = Buf & Eight
        Case 9: Buf = Buf & Nine
        Case 10: Buf = Buf & "ten"
        Case 11: Buf = Buf & "eleven"
        Case 12: Buf = Buf & "twelve"
        Case 13: Buf = Buf & "thirteen"
        Case 14: Buf = Buf & "fourteen"
        Case 15: Buf = Buf & "fifteen"
        Case 16: Buf = Buf & "sixteen"
        Case 17: Buf = Buf & "seventeen"
        Case 18: Buf = Buf & "eighteen"
        Case 19: Buf = Buf & "nineteen"
    End Select
    EnglishDigitGroup = Buf
End Function

Now, when you want to convert currency into words, you will reference the English function in your Access database as follows:
English (100) would return "one hundred exactly"
English (125) would return "one hundred twenty-five exactly"
English (125.3) would return "one hundred twenty-five and 30/100"

Frequently Asked Questions


Question: How do I get this function to work in a form?
Answer: To use this function, first copy the two functions listed above (English and EnglishDigitGroup) into a Module in your Access database.
Then, open your form in Design view, create a new text box, and view the properties for the new text box. Select the Control Source property and enter the following formula:
=English([UnitPrice])
What this formula does is display the English representation of the field UnitPrice.


Now when you view your form, you should see the Unit Price information displayed in English in the last text box on the form.

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