I'm creating a worksheet for a service desk which stats are taken once a month and then extrapolated for the rest of the month. I've created a calendar that will count the number of days that the service desk is open for the different hours of the week, see worksheet file. I'm having a problem with cell references in the formulas. I'm actually using two sheets one with the service desk statistics and the second sheet that counts the different hours and days of the month to find the total service hours for anyone month but for my example file is based on one worksheet though I'm still having the same problem. The formula I've tried using is =B2/72*'Stats Days'!J41. I've also tried putting all numbers in its own cell as well and still have the same results. I believe the number are rounded up to the next whole number but I don't see why the totals are so different. How can have the formula round the numbers to the next whole number. The cells are formatted to Number with no decimal numbers. Thanks for the assistance. Daivd