formula to find a range of cells = to a value

[Gary]

I need to do calculations on multiple cells that are in multiple rows. The
rows that I need to work with will all have the same value in the first
column. The spreadsheet is already sorted by the first column, I just need
to know how many rows have the same value in the first column. Then I will
write a formula that will use that range for doing some basic math
calculations.

Thank you,

Gary

 

[Bernard Liengme]

=COUNTIF(A:A,A1) might work for you

 

[Shane Devenshire]

Hi,

Why don't you give us an example, some data and the calculation you are
trying to do.

You can find how many cells have a given value in column A with the formula

=COUNTIF(A:A,"myvalue")

 

[Gary]

Thank you for quick reply. I copied and pasted a simplified example. I need
to calculate the meter difference between like parts for the same sn. I also
need to calculate the meter difference between part '2' and '5'. For sn 'a',
the answers would be 140 and 50.
sn part Date meter countif difference in meter
a 2 01/01/08 10 5
a 2 02/01/08 150 5 140
a 5 03/01/08 200 5 50
a 6 04/01/08 300 5
a 1 05/01/08 400 5
b 2 07/01/08 225 2
b 1 08/01/08 250 2
c 1 09/01/08 25 1


This is difficult for me to explain in writing, hopefully it makes sense?

Thank you,

Gary

 

[Gary]

the countif formula does tell me how many cells, but I think I really want to
know the range. Like a2:a6. Then I could use this result in a vlookup.

Thank you,

Gary