→For employees filling timesheets · managers verifying hours · anyone tracking a work week
Working Hours Calculator
Toggle each day, enter start and end times plus break minutes, and see your total weekly hours instantly — with overtime flagged and an optional pay estimate.
Toggle each day on/off, set your start time, end time, and break. Hours update instantly.
| Day | Start | End | Break (min) | Hours |
|---|---|---|---|---|
: | : | 7.5 | ||
: | : | 7.5 | ||
: | : | 7.5 | ||
: | : | 7.5 | ||
: | : | 7.5 | ||
: | : | — | ||
: | : | — |
Hours use 24-hour time. Pay is pre-tax gross. Overtime shown at 1.5× for hours above 40/week (US FLSA).
Results are pre-tax estimates for general guidance only — not financial, legal, or tax advice. See disclaimer.
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How to calculate total hours worked
Tracking your hours accurately matters whether you're submitting a timesheet, checking a paycheck, planning a project budget, or understanding when overtime kicks in.
The basic calculation
For any shift:
- Net hours = End time − Start time − Unpaid break
A 9:00–17:30 shift with a 45-minute unpaid break gives 8.5 − 0.75 = 7.75 hours. Sum across all days for your weekly total.
Why unpaid breaks matter
Many employees forget to deduct unpaid lunch breaks from their hours worked, which overstates time and creates payroll discrepancies. Paid rest breaks (typically short 10-to-15 minute breaks in the US) are counted as hours worked; unpaid meal breaks are not.
Overtime thresholds
Under US federal law (the Fair Labor Standards Act), non-exempt employees must be paid at least 1.5× their regular rate for hours exceeding 40 in a workweek. Some states (notably California) apply daily overtime rules in addition to the weekly threshold — check your state's labor department for details.
Converting hours to pay
Once you have your weekly hours, multiply by your hourly rate for regular pay, and by 1.5× for any overtime hours. Toggle the "Show estimated pay" switch in the calculator to see this breakdown automatically.
Common time tracking mistakes
- Not counting short paid rest breaks (these should be included in hours worked)
- Counting unpaid meal breaks as work time (these should be excluded)
- Rounding hours too aggressively — always keep at least one decimal place for precision
- Forgetting to account for days worked on public holidays, which may attract premium pay under your contract
Pay estimates are pre-tax gross figures. Overtime rules vary by state and country — use this as a guide and confirm with your payroll team.
Frequently asked questions
For each day, subtract your start time from your end time, then subtract any unpaid break time. Add up the net hours across all days. For example, 9:00 to 17:00 with a 30-minute break = 7.5 hours. Five such days = 37.5 hours for the week.