Once a time format like h:mm has been applied, Excel will display 12:00.
Convert decimal hours to Excel time
To convert hours in decimal format to a valid Excel time, divide by 24. In the example shown the formula in C5 is: =B5/24 which returns 0.04167, the equivalent of 1 hours. Cell D6 shows the same result formatted as time, which displays 1:00.
