How do I make Excel recognise TRUE or FALSE text as boolean values?

Question

I have been using the INT formula to convert boolean values TRUE and FALSE into 1s and 0s. However, I have copied some data I have been given into my spreadsheet and Excel hasn't recognised the text as boolean in some cases.

The TRUE and FALSE text is aligned left and is formatted as 'General'. The INT formula doesn't recognise this as boolean. However, as soon as I click a TRUE or FALSE cell and then hit enter, the text becomes center aligned and my formula recognises it as boolean and converts it to an integer.

Is there any way I can make Excel recognise this without having to click on every cell and hit enter?

Answer 1

Excel won't recognize text "TRUE" or "FALSE" as their boolean equivalents... If you need to convert them, an IF statement will accomplish the task:

=IF(OR(A24,A24="TRUE"),TRUE,FALSE)

Answer 2

People tend to make boolean values harder then they are. This is the best way to handle your problem in basic excel in my opinion (if you are OK with all other values then "TRUE" returning false):

=UPPER(TRIM(A1))="TRUE"

In VBA :

Public Function ConvertToBoolean(InputString As String) As Variant
    
        Dim TempText As String
        TempText = UCase(Trim(InputString))
    
        If TempText = "TRUE" Or TempText = "FALSE" Then
            ConvertToBoolean = TempText = "TRUE"
        Else
            ConvertToBoolean = InputString
        End If
    
End Function

It deals with white-spaces ,upper/lowercase and other values.

Answer 3

Old question - but the following method may be handy for posterity.

Excel is recognizing the booleans as text. You can change the format to General for the entire column, but Excel won't re-evaluate the format until you click in each cell and hit Enter. An alternative is to use the text-to-columns function and e.g. use a very wide fixed width. The outcome will be the same single column, but Excel will be forced to re-evaluate the format and update all of your true and false entries to booleans.

http://dailydoseofexcel.com/archives/2009/10/12/converting-cells-formatted-as-text/

Answer 4

As you anyway convert your logical values to number why do you want to change your data instead of adjusting your formula to accept text too: =INT(IF(ISLOGICAL(A1),A1,A1="TRUE"))

Answer 5

What does =TYPE(Value) show for the column of TRUE/FALSE?

I am using LibreOffice and not "true" Excel, but it recognizes even text fields properly...

Maybe you could search/replace TRUE with =TRUE?

Answer 6

You may have pasted data that included embedded spaces.

"true" and "false" will automatically convert to TRUE and FALSE "true " and "false " will be treated like text.

Answer 7

I just found a more practical solution to get the cells re-evaluated:

1. Make sure the column is formatted as General
2. Mark the column (so you don't accidentally replace something else)
3. Use CTRL+F to search and replace FALSE with FALSE and then TRUE with TRUE

Answer 8

None of these solutions worked well for me (Very long formula resulting in the text), so I got annoyed and wrote my own solution.

Public Function ConvertToBoolean(InputString As String) As Variant
Dim TempResults As Variant

If InputString = "True" Then
    TempResults = True
ElseIf InputString = "False" Then
    TempResults = False
Else
    TempResults = InputString
End If

ConvertToBoolean = TempResults


End Function

This doesn't bother with dealing with 1's and 0's, but you can wrap it around a string and get True, False, or the original string back, depending.

Answer 9

I find that a custom function in VBA works best. I often use vba.VarType and Select Case for these kinds of functions, to first trap the input by type, as explicitly as I can.

Public Function vbaBool(X) As Boolean
   '* Convert any X to boolean
   Dim xt As String, xn As Double, i As Long
   
     xt = vbNullString
     xn = 0
     
     Select Case vba.VarType(X)
         Case vbEmpty, vbNull, vbError, vbDataObject, vbUserDefinedType
         Case Is >= vbArray
             If TypeOf X Is Range Then i = 1 Else i = LBound(X)
             xt = vba.UCase(vba.Trim(X(i)))
             xn = vba.Val(X(i))
         Case vbObject
         Case Else
             xt = vba.UCase(vba.Trim(X))
             xn = vba.Val(X)
     End Select
     
     Select Case xt
         '* Add any other equivalencies for "true" to the list below
         '* e.g. "OUI", "JA", "SI"
         Case "Y", "YES", "T", "TRUE" 
             vbaBool = True
         Case Else
             vbaBool = (xn <> 0)
     End Select
End Function

Answer 10

If you use the TRIM function it will evaluate the target cell's boolean value as TEXT.

A2=TRUE (boolean)
B2: =IF(TRIM(A2)="TRUE","Y","N") will evaluate it as "TRUE" within the function resulting as "Y".