This function returns the decimal number representing a particular time in Excel.
TIMEVALUE(time_string)
Specify the time as a text string.
Use this function to convert the time represented by a text string to a decimal number.
Accepts string data. Returns the decimal number that represents the time in Excel.
TIMEVALUE(B18)
TIMEVALUE(R18C2)
TIMEVALUE("5:29") gives the result 0.228472
TIMEVALUE("5:29 PM") gives the result 0.728472
TIMEVALUE("17:29") gives the result 0.728472
This function is available in product version 1.0 or later.
TIME | DATEVALUE | Date and Time Functions