To convert a text date in a cell to a serial number, use the DATEVALUE function. Then copy the formula, select the cells that contain the text dates, and use Paste Special to apply a date format to them. Follow these steps: Select a blank cell and verify that its number format is General.

For example, if you type a number that contains a slash mark (/) or hyphen (-), Excel may interpret it as a date and convert it to date format. If you want to type non-calculated values such as 10e5, 1 p, or 1-2, and you do not want Excel to convert the value to a built-in number format, you can apply the Text format to the cells, and then ...

Credit card numbers are rounded down. Excel has a maximum precision of 15 significant digits, which means that for any number containing 16 or more digits, such as a credit card number, any numbers past the 15th digit are rounded down to zero. In the case of number codes that are 16 digits or larger, you must use a text format.

Hide or display zero values in Excel worksheets by using an option in the Advanced tab, or by using a number format, using a conditional format, a function, and by hiding zeros in PivotTable reports. ... These steps hide zero values in selected cells by using a number format. The hidden values appear only in the formula bar and are not printed ...

WEEKNUM(serial_number,[return_type]) The WEEKNUM function syntax has the following arguments: Serial_number Required. A date within the week. Dates should be entered by using the DATE function, or as results of other formulas or functions. For example, use DATE(2008,5,23) for the 23rd day of May, 2008.

Why do my results appear as numbers instead of dates? Depending on the format of the cells that contain the formulas that you entered, Excel might display the results as serial numbers; in this case, 2/16/14 might be displayed as 41686. If your results appear as serial numbers, follow these steps to change the format: Select cells B5 and C5.

In a PivotTable that is based on data in an Excel worksheet or external data from a non-OLAP source data, ... To enable or disable number formatting, such as currency, dates, and times, select or clear the Number Format check box. To enable or disable font styles, such as bold, italics, underline, ...

Unfortunately, when you combine text and formatted numbers, like dates, times, currency, etc., Excel doesn’t know how you want to display them, so it drops the number formatting. This is where the TEXT function is invaluable, because it allows you to force Excel to format the values the way you want by using a format code , like "MM/DD/YY ...

To count numbers or dates that meet a single condition (such as equal to, greater than, less than, greater than or equal to, or less than or equal to), use the COUNTIF function. To count numbers or dates that fall within a range (such as greater than 9000 and at the same time less than 22500), you can use the COUNTIFS function. Alternately, you can use SUMPRODUCT too.

Note: You can also apply the time format without using the TEXT function to specify the format.To view the number as a time: select the cell and, on the Home tab—in the Number group—click the arrow next to the Number Format box. Then click More Number Formats, click Custom in the Category list, and then click a custom format in the Type box. Keep in mind: if you use both a format applied ...