Work Hours Calculator

Turn a clock-in and clock-out time into total hours worked, subtract unpaid breaks, and optionally estimate pay from an hourly rate.

Calculating a single day's pay from a clock-in and clock-out time seems like it should reduce to one subtraction, but real work-hour calculations usually have at least one extra variable folded in — an unpaid lunch break that needs to be subtracted out separately, and often an hourly rate that needs to be multiplied in to get an actual dollar figure rather than just a duration.

That combination of steps, done correctly and in the right order, is exactly the kind of small multi-part calculation that's easy to fumble under normal end-of-day tiredness: subtract the break time from the raw duration first, then multiply the remaining hours by the rate — reversing that order, or forgetting to convert minutes into a decimal fraction of an hour before multiplying, produces a wrong number that looks plausible enough not to notice.

This tool runs through all of that in one pass: enter a clock-in and clock-out time, a break duration, and optionally an hourly rate, and it calculates the actual worked hours after the break is subtracted, plus a pay estimate if you've provided a rate — the same calculation a timesheet or payroll system runs internally, made available as a quick manual check.

1. Enter your clock-in and clock-out times.
2. Enter any unpaid break time in minutes.
3. Optionally enter an hourly rate to estimate pay.
4. Press Calculate to see hours worked and estimated pay.