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VB6 - Convert HH:MM into Decimal

Posted on 2016-11-18
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Last Modified: 2016-11-19
Hi,

I need your help to convert a time in a textbox1 to be converted into Decimal value.

Normally, in Excel, if i have 00:10 (10 minutes) the decimal value would be 0.17.
The excel formula would be:
=INT(A1)*24+ROUND(MINUTE(A1)/60,2)

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But now, i would like to do the same thing but in VB6 and the time would be entered in the TextBox1.

I would like to get the Decimal result in Textbox2.

How can i do that?

Thanks for your help
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Question by:Wilder1626
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8 Comments
 
LVL 46

Expert Comment

by:Martin Liss
ID: 41893438
Will the TextBox1 value always be hours and minutes?
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LVL 46

Accepted Solution

by:
Martin Liss earned 400 total points
ID: 41893444
Change the textbox names to suit.

Dim intMin As Integer
Dim strParts() As String
strParts = Split(Text1.Text, ":")
intMin = strParts(1) + 60 * strParts(0)
Text2.Text = Round(intMin / 60, 2)

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0
 
LVL 4

Assisted Solution

by:Chris Watson
Chris Watson earned 100 total points
ID: 41893447
Dim hours As Long
hours = Left(Text1.Text, 2)
    
Dim hoursAsDays As Long
hoursAsDays = hours * 24
   
Dim minutes As Byte
minutes = Right(Text1.Text, 2)
    
Dim minutesAsDays As Currency
minutesAsDays = minutes / 60
minutesAsDays = Round(minutesAsDays, 2)
    
Dim days As Currency
days = hoursAsDays + minutesAsDays

Text2.Text = days

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0
 
LVL 11

Author Closing Comment

by:Wilder1626
ID: 41893457
Thank you so much. This is exactly what i was looking for.
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LVL 46

Expert Comment

by:Martin Liss
ID: 41893464
I don't know how the value gets into Textbox1 but if it's user entered then you might want to add lines 3 to 6.
Dim intMin As Integer
Dim strParts() As String
If Len(Text1.Text) - 1 <> Len(Replace(Text1.Text, ":", "")) Then
    MsgBox "A string in the form hh:mm or h:mm is expected, please try again"
    Exit Sub
End If

strParts = Split(Text1.Text, ":")
intMin = strParts(1) + 60 * strParts(0)
Text2.Text = Round(intMin / 60, 2)

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In any case you're welcome and I'm glad I was able to help.

If you expand the “Full Biography” section of my profile you'll find links to some articles I've written that may interest you.

Marty - Microsoft MVP 2009 to 2016
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              Experts Exchange Top Expert Visual Basic Classic 2012 to 2015
1
 
LVL 11

Author Comment

by:Wilder1626
ID: 41893808
Thanks Martin, I will definitely add lines 3 to 6. Good idea as the vale is added manually.
0
 
LVL 46

Expert Comment

by:Martin Liss
ID: 41893819
Since a user can put anything in a textbox you probably should use a MaskedEdit control instead as in the attached.
MaskedEdit.zip
1
 
LVL 11

Author Comment

by:Wilder1626
ID: 41894164
wow, i've to go with your MaskedEdit control. That a very good idea. Thanks again
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