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in the format 3.42] in A1:A50 you could sum them with this formula =SUMPRODUCT(TEXT(A1:A50*100,"0\:00\:00")+0) format result cell as [h]:mm:ss This means times and hours are fractional values of 1, as shown in the table below:Because each hour can be represented as 1/24,  you can convert an Excel time into decimal hours by multiplying the value by 24, convert to decimal minutes by multiplying the value by 1440 (24 * 60) , and convert to seconds by multiplying by 86400 (24 * 60 * 60).With the time value 6:00 cell A1, you can visualize the conversion like this:When you multiply a time value by 86400, Excel may automatically format the result using a time format like h:mm, which will display the value incorrectly. (The reason that this method works is because Excel times are internally stored as decimal values, with the value 1.0 used to represent 24 hours, and therefore, the value 1/24 used to represent 1 hour). 2 hours 30 minutes and 30 seconds is equal to Again, the formula in B2 of the above spreadsheet returns the value When you convert a time to a decimal, the cell containing the result may have the wrong formatting (e.g. In the example shown, the formula in D5 is: = INT ( C5 - B5 ) & " days " & TEXT ( C5...To convert a time in Excel's format to a Unix time stamp, you can use a formula based on the DATE function.

Formula =A4/86400. This...To convert a valid Excel time into decimal hours, simply multiply by 24. Select a blank cell, for instance, Cell B1, enter this formula =A1*24 in the cell (the Cell A1 indicates the cell you want to convert its data to decimal time, you can change it as you need), then click Enter button on the keyboard. You'll also learn how to troubleshoot, trace errors, and fix problems. How this formula works In the Excel time system, one 24-hour day is equal to 1. Instant access. Your message must be at least 40 characters

In this case, the time is simply multiplied by 24 (the number of hours in one day).The formula in cell B2 of the above spreadsheet returns the value The second formula that can be used to provide the same result uses the Excel Again, the formula in cell B2 of the above spreadsheet returns the value Cell B2 of the spreadsheets below show the two formulas that can be used to convert a time to a number of minutes in Excel.The simplest way to convert a time to a number of minutes is to multiply the time by 1440, which is equal to 24*60 (the number of minutes in one day):For the time 02:30:30, the formula in cell B2 of the above spreadsheet returns the value I.e. Column D shows the same result formatted with [h]:mm. This is useful to calculate working time, calculate elapsed time, etc. In the example shown the formula in C5 is: = B5 / 24 which returns 0.04167, the equivalent of 1 hours. To display the result as a regular number, apply the Formulas are the key to getting things done in Excel. This is useful to calculate working time, calculate elapsed time, etc. In the example shown, the formula in C6 is: = B6 / 86400 To display the result as time, apply a time format. To convert time to minutes, multiply the time by 1440, which is the number of minutes in a day (24*60). If you want to save the converted result in another location, click Kutools > Content > Convert Time > Convert Time , then in the popping dialog, check the operation as you need, and select one cell to place the result. To convert a valid Excel time into decimal minutes, you can multiply by 1440. These include arithmetic operation, CONVERT function and combination of three different Time functions.Usually, multiplying the original time value by the number of hours, minutes or seconds is the easiest way to If you have time value in decimals and you want to , all you have to do is multiply it by 24. Convert hh:mm:ss time format to seconds / minutes / hours with Kutools for Excel. Because each hour can be represented as 1/24, you can convert an Excel time into decimal hours by multiplying the value by 24, convert to decimal minutes by multiplying the value by 1440 (24 * 60) , and convert to seconds by multiplying by 86400 (24 * 60 * 60). This...To convert a valid Excel time into decimal hours, simply multiply by 24. If you want to save hours of research and frustration, try our live service! You must have JavaScript enabled to use this form. How this...To calculate the number of hours between two times, you can use a formula that simply subtracts the start time from the end time. On the contrary of above problem, if you want to convert hh:mm:ss time format to seconds, minutes or hours, I can recommend a useful tool-Kutools for Excel, with its Convert Time feature, you can quickly convert the time format to the number of hours, minutes or seconds.