In this tutorial from everyone's favorite digital spreadsheet guru, YouTube's ExcelIsFun, part of his 'Excel Finance Class' series of free video lessons, you'll learn how to calculate the future and present values for multiple cash flows in Excel. Working with dates in Excel can sometimes be a little confusing. Excel stores dates as sequential numbers that can be used in calculations. By default, Excel stores the date January 1, 1900 as serial number 1, and January 1, 2016 as serial number 42,370.

The unit of time in Excel is the Day. By using the to show both date and time, you can see the underlying serial number by changing the cell format to General. This serial number is composed of two parts: the date part is the integer and the time part is the decimal. Download eclipse for mac os. The Date serial number is an integer value based upon a, either Windows or Mac. The Time serial number is represented as a decimal fraction because time is considered a portion of a day. The Date and Time Calculator (Excel) In the table below I entered a date in cell B2, a time in C2, and a formula in D2 that adds the two together.

Excel automatically formatted this cell using a m/d/yyyy hh:mm format. I changed the row 3 cell to General so you can see the serial number values. This is the function for time calculator in Excel. You can clearly see that Date is a integer value, Time is a decimal fraction, and the Date/Time format has both together in one number. Date and Time Calculations In Excel, date serial number 1 is Jan 1, 1900 for the Windows Date System.

The date serial number 40364 represents July 5, 2010 because it’s 40,363 days after Jan 1, 1900. These date serial numbers are used in calculations by Excel. Time is a decimal value from zero (0) to 0.99999999, representing times from 0:00:00 (midnight) to 23:59:59 (11:59:59 pm).

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Think about time values as the number of seconds past 12:00 AM divided by the number of seconds in a day, 86,400. Obviously this can be simplified if using only hours or minutes. For example, the time value for 6:00 AM is 0.25, which is 6hrs divided by 24hrs. The time shown above (7:12:30 AM) has a decimal value of 0.300347222. The calculation is: • 7 hours = 7 hrs x 60 min/hr x 60 sec/min = 25,200 seconds • 12 minutes = 12 min x 60 sec/min = 720 seconds • Total seconds = 25,200 + 720 + 30 = 25,950 • Decimal value = 25,950 / 86,400 = 0.300347222 Change the cell formatting to Time and you will see 7:12:30 AM (or your local Time setting format).

Tip: When subtracting two different times not in the same day, the integer portion of the serial number must be used or the calculation will be invalid. • Post author You need to change the cell formatting. In cell A1 type in 5:45 AM, then in cell B1 type in the formula =A1 which will give you two cells with 5:45 PM. Select cell B1 and use the keyboard shortcut Ctrl+1 ( or CMD+1 on a Mac) to bring up the Format Cells dialog box. Click on the Number tab and select Time in the Category pane. You should see a few formats that don’t have an AM/PM, which you should select and click OK.

(My choice was 13:30 which may or may not match what you will see.) YOu should now see 17:45 in cell B1. Another way to show the 24 hour format is to change the cell formatting by using the Custom format and type in h:mm for hours and minutes. • Enayat Dear Aravind, There are many useful methods but the one I just tried with the result what you exactly wanted is below: Pretend your start-time is located in Cell A1 and End-Time in B1.

A1>>> 3/18/2013 9:38:00 AM B1>>>3/20/2013 12:20:00 PM Formula: =(DAYS360(A1,B1)*24+1)+HOUR(MOD(B1-A1,1))&”:”&MINUTE(MOD(B1-A1,1)) First you need to find the number of days by function Days360 and Multiply it by 24Hours to find exact Hours based on number of days. Note: From 18th to 20th the result will be 2 days, while it should be three days e.g (18th,19th and 20th) therefore it should be +1. I think there is no need to explain the rest of the formula. At a glance you can pick the meaning of the formula.