Clock-Out Time Calculator

Working out what time you clock out

Add your paid hours to your clock-in time, then add every unpaid minute on top. Clock in at 9:00 AM for an eight-hour day with a 30-minute unpaid lunch and you leave at 5:30 PM. The half hour is not part of the eight, so it lands on the end of the day rather than inside it.

That last point is where most of the confusion comes from. People add eight hours to nine and get five, then wonder why the schedule says half past. The break is unpaid, so it does not count toward the hours you owe, so the day has to run longer to fit it in.

When the break is paid, nothing moves

A short rest break, roughly twenty minutes or less, is hours worked under federal rules and stays on the clock whether or not anyone punched out for it. Clock in at nine, work eight hours with two paid fifteen-minute breaks, and you still finish at five. Only a genuine meal break, thirty minutes or more with you fully relieved of duty, pushes the end of the day out. Meal and rest break laws by state says which states require one at all.

Eight hours from now, and overnight shifts

Starting at 10:00 PM and working eight hours puts you out at 6:00 AM. Subtracting clock times across midnight gives a negative answer, so add 24 hours whenever the finish is earlier than the start. The calculator above does it for you; the arithmetic is worth knowing because a paper time card will not.

Leaving on time and being paid for it are different questions

Knowing your clock-out time tells you when to leave. It does not tell you what you are owed if you stay past it. Anything over 40 hours in a workweek carries the overtime premium, and a few states add a daily threshold on top, so a long day can cost the employer time and a half even in a short week.

For the whole week rather than one shift, the time card calculator totals seven days with breaks deducted, and the overtime calculator prices the premium once you have the hours.