Calculate total work hours from clock-in and clock-out times with break deductions and overtime tracking.
Enter a clock-in time, a clock-out time, and a break length, and it returns the net hours actually worked, plus a regular/overtime split against a daily threshold you set (commonly 8 hours). It works entirely from the raw span between the two clock times, then deducts the break in minutes. The thing people trip on most: it treats the break value as a flat deduction from the span, not as time that was separately tracked with its own start and stop, so entering the wrong units (e.g. '30' meaning half an hour vs. 30 seconds) silently skews the result.
A concrete input and expected output from the current implementation.
Input
Clock in: 8:00 AM, Clock out: 5:30 PM, Break: 30 minutes, Overtime threshold: 8 hours/day
Expected output
Gross span: 9h 30m. Net worked: 9h 00m. Regular: 8h 00m. Overtime: 1h 00m.
8:00 AM to 5:30 PM spans 9 hours 30 minutes; subtracting the 30-minute break leaves 9 hours worked, and the hour beyond the 8-hour threshold is reported as overtime.
Accepts clock-in and clock-out in 12-hour (with AM/PM) or 24-hour format and computes the raw elapsed time between them. If clock-out is earlier in the clock than clock-in, it treats the shift as crossing midnight and rolls the calculation into the next day rather than returning a negative duration.
Subtracts the entered break minutes from the gross span to get net worked time. That net figure is then compared against a daily overtime threshold you set (no fixed default is assumed); any hours above the threshold are reported as overtime and the rest as regular hours.
Yes - if the clock-out time is numerically earlier than the clock-in time, it assumes the shift ran past midnight and calculates the span into the next day rather than returning a negative or zero duration.
Not necessarily. It only applies the threshold and rate logic you configure in the tool - it does not apply your employer's pay policy, state overtime law, or any premium pay multiplier, so treat it as a hours-worked check, not a pay calculation.
The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.
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