How to use the HOUR function in excel

The Excel HOUR function is a DATE & TIME function. This function takes time value as input and returns the HOUR value from the input time value in numerical format. In this article, we will learn how to use the HOUR function in Excel. Time value in excel is stored as number.

Syntax of HOUR Function:


serial_number : time value

Example of HOUR Function

All of these might be confusing to understand. So, let's test this formula via running it on the example shown below. So, here I have a table of some data. Excel understands time value as numerical value. The first column contains the time value or date and time value combined, second column contains hour value as result of the using the HOUR function and third column contains the important notes using the function

Use the formula:


It will return 0. Here the argument to the HOUR function is given using cell reference. The returned value is zero as excel considers hour value starting from the 0 as 12:00 AM and 12 as 12:00 PM. As shown in the above snapshot, you can change the format of any cell to any format using the format cell option. Now You can copy the formula from one to the remaining cells using the Ctrl + D shortcut key or using the drag down option in excel.

As you can see from the above snapshot that HOUR function takes time value as input and returns the HOUR value from the time value. The function returns #VALUE! Error if the time or date & time value is invalid.

Excel HOUR function : HOUR function with other formulas to return result in HOUR format. HOUR function is mostly used with other date and time functions for calculating HOUR values in

Excel. From one time value extract hour, minute and second for more calculation like the one shown below to get the minimum exit time entry.

Use the formula:


Here the HOUR function extract HOUR value, MINUTE function extracts minute value and second function extracts second value from the given time value and perform operation over numerical values and return the arguments to the TIME function to get in return required time value.

Here are some observational notes shown below.


  1. The formula only works with numbers.
  2. The numerical hour value starts from 12:00 AM as 0 and goes upto 23 as 11:00 PM.
  3. Arguments to the function must be numeric values or else the function returns #NAME? Error.
  4. No argument to the function returns #NUM! Error.
  5. The function ignores minute and second value
  6. The function returns #VALUE! Error if the date or time value is invalid.

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