Enter your clock-in time, clock-out time, and break duration for each day below. The calculator automatically deducts unpaid breaks and shows your net hours worked, regular pay, and overtime — for the full week at once.
| Day | Gross Hrs | Break | Net Hrs | Regular | Overtime | Day Pay |
|---|
⚠️ Overtime calculated on weekly basis (over 40 hrs). Daily OT applies if California/Nevada mode selected. Pay estimates are gross — before taxes.
How to Calculate Hours Worked with a Lunch Break
Calculating net work hours with breaks is a two-step process — and getting it wrong means either over- or under-paying yourself or your employees.
Net Hours Worked = Gross Hours − Unpaid Break Time
Example: 9:00 AM to 5:30 PM = 8.5 hrs gross
Minus 30-min lunch = 8.0 hrs net worked
In: 8:00 AM | Out: 5:00 PM | Lunch: 30 min unpaid
Gross hours: 5:00 PM − 8:00 AM = 9.0 hours
Unpaid lunch deduction: −0.5 hours
In: 6:00 AM | Out: 6:30 PM | Breaks: 30 min lunch + two 10-min rest breaks
Gross hours: 12.5 hours
Unpaid break: 30 min lunch = −0.5 hrs (rest breaks are paid under FLSA)
Paid vs. Unpaid Breaks: What the Law Requires
Not all breaks are treated the same under federal and state law. Using the wrong rule can mean miscalculated paychecks.
| Break Type | Duration | FLSA Rule | Include in Hours? |
|---|---|---|---|
| Short rest break | 5–20 minutes | Must be paid | ✅ Yes — count as work time |
| Meal / lunch break | 30+ minutes | Can be unpaid if fully relieved | ❌ No — deduct from timesheet |
| Meal break (interrupted) | 30+ minutes | Must be paid if duties continue | ✅ Yes — if not fully off duty |
| Smoke break | Varies | Treated as rest break if ≤20 min | ✅ Usually yes |
Key rule: A lunch break is only unpaid if the employee is completely relieved of all duties. If your manager calls you during lunch, responds to emails, or stays near equipment — that break is legally paid time, even if it's 45 minutes long.
California Break Rules (Stricter)
California requires a 30-minute unpaid meal break after 5 hours of work, and a second meal break after 10 hours. If the employer fails to provide this, they owe the employee one hour of premium pay per missed break. California also mandates a 10-minute paid rest break for every 4 hours worked.
How Lunch Breaks Affect Overtime Calculations
Overtime is calculated on net hours worked — after deducting unpaid breaks. This matters because counting gross hours (before break deduction) would inflate overtime and cost employers more than the law requires.
Schedule: Mon–Fri, 7:00 AM to 5:30 PM with 30-min unpaid lunch each day
Gross per day: 10.5 hrs | Net per day (−30 min): 10.0 hrs
Weekly net total: 10.0 × 5 = 50 hours
Regular hours: 40 | Overtime hours: 10
At $22/hr → Regular pay: $880 | OT: 10 × $33 = $330
Common Break Schedules by Industry
| Industry | Typical Lunch | Rest Breaks | Total Deducted/Day |
|---|---|---|---|
| Office / Corporate | 30–60 min unpaid | 2 × 10 min (paid) | 30–60 min |
| Retail & Restaurant | 30 min unpaid | 1–2 × 10 min (paid) | 30 min |
| Manufacturing | 30 min unpaid | 2 × 10 min (paid) | 30 min |
| Healthcare (12-hr shifts) | 30 min unpaid | 2–3 × 15 min (paid) | 30 min |
| Construction | 30 min unpaid | 1 × 10 min (paid) | 30 min |
| Trucking / Logistics | 30 min (DOT rules) | Per DOT HOS rules | 30+ min |
5 Tips for Accurate Timesheet Tracking with Breaks
- Record exact clock times, not rounded estimates. Rounding to the nearest quarter hour is allowed but must benefit the employee on average, not just the employer.
- Log break start and end times separately if your employer requires it — this proves you were fully relieved.
- Never let your employer auto-deduct breaks without confirming you actually took them. Auto-deduction without actual breaks is a wage violation.
- Check your state rules — California, Nevada, Oregon, and Washington have break requirements stricter than federal FLSA.
- Use this calculator before payday to verify your expected paycheck matches what you receive.
Pro tip: The calculator above updates daily totals in real time as you enter times. Use it to spot overtime risk mid-week — so you or your employer can adjust schedules before hitting OT thresholds.
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Try ClockCalc Free →Frequently Asked Questions
How do I calculate hours worked with a lunch break?
Subtract clock-in from clock-out to get gross hours, then subtract the unpaid lunch duration. Example: 9:00 AM to 5:30 PM = 8.5 gross hours − 0.5 hr lunch = 8.0 net hours worked. Use the calculator above to do this automatically for a full week.
Should lunch breaks be paid or unpaid?
Under the FLSA, meal breaks of 30+ minutes are unpaid if the employee is completely relieved of all duties. Rest breaks of 20 minutes or less must always be paid. If you're interrupted during your lunch break, that time must be compensated.
How many hours is a standard 8-hour workday with a 30-minute lunch?
An 8-hour paid workday requires 8.5 hours on the clock to account for a 30-minute unpaid lunch. Common schedules: 8:00 AM–4:30 PM, 8:30 AM–5:00 PM, or 9:00 AM–5:30 PM.
How do I calculate overtime when I have a lunch break?
Overtime is based on net hours worked — after subtracting unpaid breaks. If you clock 10.5 gross hours with a 30-min unpaid lunch, your net is 10.0 hours. Overtime (weekly method) counts toward the 40-hour threshold using net hours only.
Can my employer auto-deduct lunch breaks from my timesheet?
Employers may auto-deduct only if you actually took the full break and were relieved of all duties. If you worked through lunch or were interrupted, auto-deduction is illegal. You can dispute it and request back pay for that time.
Does this calculator work for California daily overtime?
Yes. Select "8 hrs/day (California/NV)" in the OT Threshold dropdown. The calculator will apply daily overtime after 8 hours of net work per day, in addition to the weekly 40-hour threshold.
Related tools: Full Timesheet Calculator · Biweekly Pay with Overtime · California Overtime Rules · How Many Hours Is Overtime?