For those people who just need to manually record a single weeks worth of time card information we created our free timecard hour calculator. This handy online timesheet can be used to enter the time you arrive for work, the time you leave, and the number of hours you take for breaks during the day. The free time clock calculator then automagically totals up the hours you worked for each weekday and the total number of hours worked for the week (as well as the total number of break hours you took for the week). The weekly time card can then easily be printed from within your browser to give to your payroll department or even out to a PDF file for emailing.
If you need to record your time more robustly and automatically you should try out Time Clock MTS, time clock software that can be used on one or many computers inside your company to track your time and attendance information.