Add up a work week without squinting at a calculator or trusting payroll to be right. The Gizmo 421 Time Card Calculator takes daily clock-in, clock-out, and break times, and gives you regular hours, overtime, and total hours — plus an estimated paycheck if you enter your hourly rate.
| Day | Clock in | Clock out | Break (min) | Hours |
|---|---|---|---|---|
| Monday | ||||
| Tuesday | ||||
| Wednesday | ||||
| Thursday | ||||
| Friday | ||||
| Saturday | ||||
| Sunday |
Overnight shifts (clock out before clock in) roll past midnight automatically. Nothing is saved or sent — this is your browser doing the math.
Weekly totals appear the moment you change any field, in both hours-and-minutes and decimal form, because payroll systems love decimals and humans love reading “38 hours 45 minutes.” Anything past your overtime threshold (40 by default) splits into an overtime line, and if you enter an hourly rate the estimated pay figure includes overtime at time-and-a-half.
How do I calculate hours worked? For each day: clock-out minus clock-in minus unpaid break time. This tool does it for the whole week and splits overtime automatically. Does it handle night shifts? Yes — if the out time is earlier than the in time, the shift is treated as crossing midnight. What about paid breaks or lunches? Set the break minutes to 0 for a day and the tool counts the full span. Is my data private? Completely — the calculator runs entirely in your browser and stores nothing.