Creatinine Clearance Formula (crockoft Gault)

In Excel I have been trying to find an easier way to calculate a time
difference where the times cross midnight. Example:
Start time: 23:50:00
End time: 00:15:00

How would you formulate an equation to determine the duration of time or
differnce between the start and end time?

I have a given length of steel bar...Example(550 feet)
I have various cut lengths that I can pick from...
14'-10".....13'- 9".. 12'-8"........(up to 6 different lengths)

I need to know the best combination of lengths to cut the long bar into to have minimal scrap left when we get to the end of the 550 feet.....

Cut as many of the longest cut lengths possiable.....Cut as few of the shortest cut lengths possiable

Due to the fact that I will have to convert this to a PLC application when completed, I want to find a mathmatical way to do this inside excel and not use the "solver"....Assuming that I/we can come up with an equation to do this .....
Any and all advice/help would be appricated.....

I am trying to insert a range of cell in the body of an outlook email with the same format. The code I am using now is below and it does insert anything in the email body.

Code:

Sub Mail()
Dim OutApp As Object
    Dim OutMail As Object
    Set OutApp = CreateObject("Outlook.Application")
    OutApp.Session.Logon
    Set OutMail = OutApp.CreateItem(0)
    On Error Resume Next
    With OutMail
        .To = "cbelcher@jpfryelaw.com"
        .CC = ""
        .BCC = ""
        .Subject = "Burden Report"
        .Body = ActiveSheet.Range("A1:D12")
        .Attachments.Add ("C:\Documents and   Settings\cbelcher\Desktop\Burden Report.xls")
End With
    On Error GoTo 0
    Set OutMail = Nothing
    Set OutApp = Nothing
    Set objMsg = Nothing
End Sub

I have a spreadsheet with simple (addition/subtraction) formulas. The file is quite large and the formulas are too. All of a sudden, the formulas stopped working except when I double click in the cell containing the actual formula. For example, if I enter "2" in each cell, A2 and B2, cell B3 should reflect "4" because there is a formula in cell B3 which totals cells A2 and B2. Only by double clicking on cell B3 will the program actually calculate. I'm totally perplexed and so is my IT contact. Anyone?

I have a co-worker's file that he is having trouble with. He is using Excel 2000 SP3. When copying a cell with a formula in it of "=D6+C6" and pasting it into the next cell down, it will display the same value in the cell as the calculated value from above, but has the correct formula displayed in the formula bar of "=D7+C7".

Example:
A1: 50
A2: 10
B1: 60
B2: 20

A3: Formula: =A1+A2 Displays: 60
Right click A3, Copy, right click B3, paste
A3 displays 60

When I click save, it will change the display value to 80.

I am trying this on his workstation and mine. Mine has Office 2010, so I think there might be an issue with the file itself.

Also, not just copy and paste. I can also just click the top cell after filling in the formula and then drag the bottom right of the cell downward and it will do the same of filling in the correct formula, but have the incorrect value.

I know that I could get him to just click save each time before really looking at the results, but that is just a band aid to the problem.

Any ideas how to fix this?

How do I calculate the number of batches per hour? Here's what I have so far:

Cell B5: start time: 4:15 formatted as 4:15:00 am
Cell B6: finish time: 6:15 formatted as 6:15:00 am
Cell B7: total time: 2:00 formula in cell: =TEXT(B6-B5,"h:mm")
Cell B8: total batches processed: 22 (this is entered manually)
Cell B9: batches per hour: formula in cell: =B8/TEXT(B7,"h")

as long as I have this formula in cell B9 the answer comes out correct which should be 11 per hour.
If the formula in B9 is B8/B7, the answer is 264.0, Is this because of the way excel is reading the total time or the total time is formatted as a time, not an actual number? Is this the correct way to solve the problem?
answer should be 11 per hour.

I can't find this solutions anywhere. I know how to send emails from Excel using VBA. When I get to the Body section, I want to insert a clickable link to a website, and also a clickable link to send an email (not as important as the website). Can this be done? I have found code to insert links to files, but none for website links.

I am trying to figure out how to write a formula to figure out production cycle time.
We will be building 8 "widgets" a day.
We will work 10 hours a day.
There is a 20 minute break at 9:20 am.
Production shuts down for lunch 30 minutes for lunch at 12:30.
Production starts at 6:00 am.
Here is what I can do.
Production cycle time = (10*60)-30/8 or 71.25 minutes
If we start at 6:00 am, the first scheduled cycle completion time = TIME(6,0,0+71.25/1440)

My problem is when I am trying to use a logical "IF' statement to account for the 20 minute break or lunch and still calculate the end of each cycle time through the day I receive a number of error messages.
This is the formula I am trying to make work. I have the cell the formula is in, formatted with a "mm,ss" format.
=(IF(D4+G1/1440>9:20,(D4+G1)/24,(D4+G1+15)/1440))
I have included an attachment to help (a picture is worth a thousand words).

Any help will be greatly appreciated.
I have bought a number of books in an attempt to figure this out, and I am still stumped

I have a spreadsheet where I need to calculate the increase in % one year over the other in column D for Eg if Profits are 95415 in Jan 2008 (Column B) and 80215 in Jan 2008 (Column C), then the % Increase will be (95415-80215)/80215 *100

I can calculate the formula for this , but the problem comes where for eg there is a loss in Jan 2008 for -95415 and there was a profit in Jan 2007 for 80215. How do I set up formula to take negatives & positives into account in calculating the increase or decrease/

Your assistance or anybody's on the forum will be greatly appreciated

Regards

Howard

http://www.mrexcel.com/forum/showthr...ghlight=howardneed

Need a formula to calculate weeks stock in hand based on 12 months forecast.

Here is the example.

Jan2011 Feb2011 Mar2011 Apr2011 May2011 Jun2011 Jul2011 Aug2011 Sep2011 Oct2011 Nov2011 Dec2011 ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- Product XXXXX Actual/Forecast : 174 1674 574 574 524 524 524 524 524 728 728 728 New Purchases : 0 0 0 0 1002 0 0 0 0 0 0 0 Goods In Transit: 0 1506 0 0 0 0 0 0 0 0 0 0 Other Movements : 0 0 0 0 0 0 0 0 0 0 0 0 Closing Stock : 1270 1102 528 -46 432 -92 -616 -1140 -1664 -2392 -3120 -3848 Week Stock in Hand ? ? ? ? ? ? ? ? ? ? ? ?

So, in Month of Jan2011 the Closing stock is 1270, need a formula to calculate how many weeks will this stock cover look at future forecast.

Is it possible to apply a filter to multiple sheets within the same Excel workbook, using the same filter criteria?

For example, suppose you have tables of data on 3 different tabs, all having the same headings. Suppose one of the headings is "gender". If you apply a filter to the table on Sheet 1, to only show the rows containing the word "female", is it possible to have the tables on Sheets 2 and 3 automatically update to only show the "female" rows? Or would you have to manually update the filter criteria in Sheets 2 and 3?

I hope this makes sense. Thank you in advance for any help.

I have cells in a column, some colored yellow, some not. I am trying to use
the SUMIF function to sum only the cells in the range that are colored. Can
this be done? Can I enter something in the "criteria" part of the formula
that can do this?

=SUMIF(D3:D13,"criteria",D3:D13)

I also tried to use the CELL function's color feature, but I couldn't get it
to work right. I don't know how to get Excel to recognize if a cell is
colored in a formula.
=CELL("color",cell)

It might just be that I don't know what this means in Help:

"color" --> 1 if the cell is formatted in color for negative values;
otherwise returns 0 (zero).

Can anyone help?

I see a formula that our Human Resources Department is using to annualize voluntary turnover.

It looks like this:

=(E3/((A3+D3)/2))*12/months

So if I substitute with some actual data:

=(6/((22+33)/2))*12/months the answer becomes 21.8% (as the annualized voluntary turnover rate).

What does the *12/months actually do mathematically? I cannot find it in the excel help files and have not been able to figure this out using math (on the calculator).

I am trying to calculate time based off a non-conventional quarter hour time system

example;
8:00 to 8:07 = 8.0 hrs
8:08 to 8:23 = 8.25 hrs
8:24 to 8:38 = 8.5 hrs
8:39 to 8:53 = 8.75 hrs
8:53 to 8:59 = 9.0 hrs

I am having trouble writing an equation that would sum the clock-in and clock-out times (2 per day) and display the total time in these quarter hours and adding an additional hour if it is >= to *:53. Any help would be great.

Hello,

I am new to using Excel and I am not very computer literate. I am looking for some help with a spreadsheet I am making. Here is the problem:

I have a column of 14 numbers in cells A1 to A14. If all of these values are less than 2%, I would like a "Pass" to display in cell B1. If any of these values are greater than 2% I would like a "Fail" to display in cell B1.

I have got a formula that works for a single cell but I can't figure out how to get it to apply to more than one cell. For example, I have entered =IF(A1<2,"Pass","Fail") in cell B1. Now if the value I enter in A1 is less than 2, it shows a "Pass", and if the value in A1 is greater than 2 it shows a "Fail" in cell B1. How can I get this to apply to all of the cells from A1 to A14?

If somebody could help me out that would be great.

Thanks,
Randy