Here is a great tip for formating numbers in Excel as Gigabytes, Megabytes, Kilobytes, Bytes, etc.

Use the following formula:

=IF((A1>=POWER(2,30)),

TEXT((A1/POWER(2,30)),"##0.00\G"),

IF((A1>=POWER(2,20)),

TEXT((A1/POWER(2,20)),"##0.00\M"),

IF((A1>=1024),

TEXT((A1/1024),"##0.00\K"),

TEXT((A1/8),"##0.00\B")

)

)

)