Converts a text string that represents a number to a number.
Text is the text enclosed in quotation marks or a reference to a cell containing the text you want to convert. Text can be in any of the constant number, date, or time formats recognized by Microsoft Excel. If text is not in one of these formats, VALUE returns the #VALUE! error value.
You do not generally need to use the VALUE function in a formula because Microsoft Excel automatically converts text to numbers as necessary. This function is provided for compatibility with other spreadsheet programs.
VALUE("$1,000") equals 1,000
VALUE("16:48:00")-VALUE("12:00:00") equals "16:48:00"-"12:00:00" equals 0.2, the serial number equivalent to 4 hours and 48 minutes.