If you need other time card work hours options we offer a free, full-featured payroll hours calculator on our partner website Adjust Settings to customize your time sheet.On a 12 hour clock use 12:00 pm for noon and 12:00 am for midnight.Use the Tab key to move through the input boxes or just click on each box.On a 12 hour clock you can enter a single number from 1 through 12 to indicate 1:00 through 12:00 on the hour.See total work hours in hours and minutes hh:mm format as well as decimal hours. This online time clock uses a standard 12-hour work clock with am and pm or a 24-hour clock for military time.Ĭalculate total work hours with lunch and breaks. Use this calculator to add up your work week time sheet and calculate work hours for payroll.