# converting mb to tb

Hello, I have 3 cells each one of the cells receives certain amount of numbers in MB, GB, and TB. I want to create another cell to sum all the entries in these cells as a total and give the answer in TB. I appreciate your help.
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Group Finance ManagerCommented:
You can't put a formula in TB without overwriting the value that is there. Also what row applies?
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ConsultantCommented:
Suppose you have MB amount in cell A1, GB amount in cell A2, and TB amount in cell A3.

The sum will be in A4 and the formula will be: =A1/1000000+A2/1000+A3

that will be corrent since 1TB = 1000000 MB, and 1TB = 1000GB.

Hote that helps'
Zvitam.
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Author Commented:
I'm afraid I didn't get your question well. what do you mean by overwriting the value? I added a screen shot of sample to what I asked it might look easier than writing the question.
Screen-Shot-2018-03-13-at-11.39.09.png
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Group Finance ManagerCommented:
I thought MB etc was Column References.

You cannot sum those values because they are not numbers - they contain text.

Attach the workbook and I'll amen it so that the sum will work.
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Author Commented:
Book1.xlsx
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Chief Operations ManagerCommented:
There are some solutions to adding mixed kb  mb & gb values here
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Group Finance ManagerCommented:
I've added Custom NumberFormats so you enter numbers and the letters appear. This will not affect the sum formula because it is formatting not actual letters.

Book1--4-.xlsx
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ConsultantCommented:
You can just sum the values you have to divide it as I state in my comment earlier.
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Group Finance ManagerCommented:
zvitam

You cannot sum those entries because they contain text!
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Finance AnalystCommented:
And strictly speaking, it is not a direct 1,000 factoring.

1MB = 1024KB,
1GB = 1024MB,
1TB = 1024GB

However, the publicly recognised factoring is 1000
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ConsultantCommented:
Roy cox: You can since that text is part of the cell custom format, and not the cell value.

Following Rob Henson good comment I correct what I wrote earlier:

The sum will be in A4 and the formula will be: =A1/1048576+A2/1024+A3

that will be corrent since 1TB = 1048576 MB, and 1TB =1024GB.
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Group Finance ManagerCommented:
It isn't in the original workbook, I added Custom NumberFormats
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Finance AnalystCommented:
Try this:

=SUM(LEFT(C3,FIND(" ",C3))/1048576,LEFT(D3,FIND(" ",D3))/1024,LEFT(E3,FIND(" ",E3)*1))

This assumes there will be a space between the value and the letters. If not we could allow for that and tell the find to look for the B instead.

=SUM(LEFT(C3,SEARCH("B",C3,1)-2)/1048576,LEFT(D3,SEARCH("B",D3,1)-2)/1024,LEFT(E3,SEARCH("B",E3,1)-2)*1))

SEARCH is not case sensitive so will look for B and b. Technically Mb is megabits rather than megabytes but I don't believe that is an issue in this scenario.

With sample, expand the result to 3 decimal places and you get 3.029

You can add custom formatting as per Roy's suggestion so that it shows as 3.029 TB but  can still be used as a number.
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Author Commented:
@Rob Hensen, it is giving me "there is a problem with this formula"
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Finance AnalystCommented:
Probably the brackets, I will have a look.
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Finance AnalystCommented:
As I thought, there was an extra bracket at the end, try this:

=SUM(LEFT(C3,SEARCH("B",C3,1)-2)/1048576,LEFT(D3,SEARCH("B",D3,1)-2)/1024,LEFT(E3,SEARCH("B",E3,1)-2)*1)
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EngineerCommented:
This ARRAY formula will check for the units and then add the numbers accordingly

=SUM(VALUE(LEFT(C3:G3&"0 TB",FIND("B",C3:G3&"0 TB")-2))/CHOOSE(INT((CODE(MID(C3:G3&"0 TB",FIND("B",C3:G3&"0 TB")-1,1))-63)/7),1024,1048576,1))
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Finance AnalystCommented:
Covers author's requirement
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