Time Card CalculatorWork Hours Calculator with Lunch Breaks & Overtime
Enter clock-in and clock-out times for each day. The calculator subtracts unpaid lunch breaks, totals your hours worked in hours:minutes and decimal, splits regular from overtime and double time, and shows your gross pay for a weekly or biweekly pay period.
- FLSA & California overtime rules
- Overnight shifts handled
- 5/6/15-min rounding
- CSV download & print
Time card calculator
Tip: an overnight shift such as 10:00 PM → 6:00 AM is handled automatically. Leave a day blank or untick it for a day off.
Your shifts on a 24-hour timeline
- Regular
- Overtime
- Double time
- Break
Day-by-day breakdown
| Day | In → Out | Break | Hours | Regular | OT | DT | Pay |
|---|
How do you calculate hours worked on a time card?
For each day, subtract the clock-in time from the clock-out time, then subtract any unpaid meal break. Add the daily totals to get weekly hours. Under the federal FLSA, hours over 40 in a workweek are overtime, paid at 1.5 times the regular rate. Example: 8:00 AM to 5:00 PM with a 30-minute lunch is 8.5 hours, so five such days give 42.5 hours: 40 regular hours plus 2.5 overtime hours.
How to use this time card calculator
- Choose weekly or biweekly. Biweekly adds a second week. Overtime is still worked out separately for each 7-day workweek, as the FLSA requires. It is never averaged across two weeks.
- Enter clock-in and clock-out times for each day you worked. Overnight shifts (for example 10:00 PM to 6:00 AM) are detected automatically.
- Add your unpaid break in minutes, usually a 30- or 60-minute lunch. Leave short rest breaks of 5 to 20 minutes out: under federal rules they count as paid time.
- Pick the overtime rule and rounding your employer uses: weekly 40 (federal), daily 8, or California’s daily 8/12 rule, and exact minutes or 5-, 6- or 15-minute rounding.
- Add your hourly rate to see regular, overtime and double-time pay. Then copy the summary, download a CSV or print the time sheet.
Time card formula
Daily hours = (Clock out − Clock in) − Unpaid break
Overnight = if Clock out ≤ Clock in, add 24 hours
Weekly hours = Sum of daily hours in the 7-day workweek
Overtime = Weekly hours − 40 (FLSA, if positive)
Decimal hours = Hours + Minutes ÷ 60
Gross pay = Regular × Rate + OT × Rate × 1.5 + DT × Rate × 2
Worked example (the calculator’s default week): Monday to Friday, 8:00 AM to 5:00 PM with a 30-minute unpaid lunch. Each day is 9 h − 0.5 h = 8.5 hours. Five days = 42.5 hours (42:30): 40 regular hours + 2.5 overtime hours. At $20/hour: 40 × $20 = $800, plus 2.5 × $30 = $75, for $875.00 gross pay.
Minutes to decimal hours conversion chart
Payroll systems store time as decimal hours, so 7 hours 45 minutes is 7.75 rather than 7.45. Use this chart to check a pay stub, or use the time to decimal calculator for any value.
| Minutes | Decimal hours | Nearest 1/10 hour | Nearest 1/4 hour |
|---|---|---|---|
| 1 min | 0.02 h | 0.0 h | 0.00 h |
| 2 min | 0.03 h | 0.0 h | 0.00 h |
| 3 min | 0.05 h | 0.0 h | 0.00 h |
| 4 min | 0.07 h | 0.1 h | 0.00 h |
| 5 min | 0.08 h | 0.1 h | 0.00 h |
| 6 min | 0.10 h | 0.1 h | 0.00 h |
| 7 min | 0.12 h | 0.1 h | 0.00 h |
| 8 min | 0.13 h | 0.1 h | 0.25 h |
| 9 min | 0.15 h | 0.2 h | 0.25 h |
| 10 min | 0.17 h | 0.2 h | 0.25 h |
| 12 min | 0.20 h | 0.2 h | 0.25 h |
| 15 min | 0.25 h | 0.2 h | 0.25 h |
| 18 min | 0.30 h | 0.3 h | 0.25 h |
| 20 min | 0.33 h | 0.3 h | 0.25 h |
| 24 min | 0.40 h | 0.4 h | 0.50 h |
| 25 min | 0.42 h | 0.4 h | 0.50 h |
| 30 min | 0.50 h | 0.5 h | 0.50 h |
| 36 min | 0.60 h | 0.6 h | 0.50 h |
| 40 min | 0.67 h | 0.7 h | 0.75 h |
| 42 min | 0.70 h | 0.7 h | 0.75 h |
| 45 min | 0.75 h | 0.8 h | 0.75 h |
| 48 min | 0.80 h | 0.8 h | 0.75 h |
| 50 min | 0.83 h | 0.8 h | 0.75 h |
| 54 min | 0.90 h | 0.9 h | 1.00 h |
| 55 min | 0.92 h | 0.9 h | 1.00 h |
| 60 min | 1.00 h | 1.0 h | 1.00 h |
Which breaks are paid? Federal rules at a glance
| Type of time | Paid under the FLSA? | Rule |
|---|---|---|
| Rest breaks of 5–20 minutes | Yes, counts as hours worked | 29 CFR 785.18 |
| Bona fide meal period (usually 30+ minutes, fully relieved of duty) | No, subtract it | 29 CFR 785.19 |
| Eating at your desk while still working | Yes | 29 CFR 785.19 |
| Waiting on duty (“engaged to wait”) | Yes | 29 CFR 785.15 |
| Rounding punches to 5, 6 or 15 minutes | Allowed if it averages out fairly over time | 29 CFR 785.48(b) |
State rules can be stricter. California pays overtime after 8 hours in a day and double time after 12, and a few other states have their own daily rules. The California option above applies the daily 8/12 and weekly-40 tests. The seventh-consecutive-day rule is not modelled, so check your state labor department if you work seven days in a row.
Common time card mistakes that cost you money
Reading 7:45 as 7.45 hours
Minutes are sixtieths, not hundredths: 7:45 is 7.75 hours. At $20/h, that mistake under-pays you $6 a day.
Averaging overtime over two weeks
45 hours one week and 35 the next is 5 hours of overtime, not zero. Each workweek stands alone under the FLSA.
Deducting short breaks
Coffee and restroom breaks under 20 minutes are paid time federally. Only bona fide meal periods come off.
Getting overnight shifts wrong
10 PM to 6 AM is 8 hours, not −16. This calculator adds 24 hours when clock-out is earlier than clock-in.
Related calculators
A time card answers “how many hours this week?” These tools handle the questions that come up next:
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Manzoor Ahmad
Calculator Developer · Founder of DexoCalc
I’m a pharmacist turned web developer with more than 13 years of experience building web tools. I’ve also worked hourly shifts myself, at the pharmacy counter. I built this time card calculator to follow the Department of Labor’s rules exactly: each workweek on its own, short breaks paid, and neutral rounding. I tested it against overnight, split-week and California double-time cases. If your pay stub disagrees with it, send me the details.
Published · Last reviewed · Author profile · Report an issue
Time card calculator: frequently asked questions
Subtract your clock-in time from your clock-out time, then subtract the unpaid lunch. For example, 8:30 AM to 5:15 PM is 8 hours 45 minutes; minus a 30-minute lunch it is 8 hours 15 minutes, or 8.25 decimal hours. The calculator does this for every day and adds them up.
Divide the minutes by 60 and add the result to the hours: 6 hours 20 minutes = 6 + 20 ÷ 60 = 6.33 hours. The chart on this page lists common values, and the time to decimal calculator converts any value.
Under the federal Fair Labor Standards Act, non-exempt employees earn overtime of at least 1.5 times their regular rate for hours over 40 in a workweek. Some states add daily overtime. California, for example, pays 1.5× after 8 hours in a day and 2× after 12.
No. The FLSA measures overtime per fixed 7-day workweek, so a biweekly period is two separate weeks. Working 50 hours then 30 hours gives 10 overtime hours, even though the two-week total is exactly 80. This calculator checks each week separately.
Yes, if it is neutral. Federal rules allow rounding punches to the nearest 5 minutes, tenth of an hour (6 minutes) or quarter hour (15 minutes), as long as it does not consistently under-pay workers over time. With quarter-hour rounding, 1–7 minutes round down and 8–14 minutes round up.
If your clock-out time is earlier than or equal to your clock-in time, the calculator assumes the shift crossed midnight and adds 24 hours. A 10:00 PM to 6:30 AM shift with a 30-minute break is 8 hours.
Not under federal law. Rest breaks of about 5 to 20 minutes count as hours worked and must be paid. Only bona fide meal periods, usually 30 minutes or more where you are completely relieved of duty, are unpaid. Enter only unpaid meal time in the break column.
No. Everything is calculated in your browser and nothing is sent to DexoCalc. Use Copy summary, Download CSV or Print to keep a record before you close the page.
This time card calculator totals a whole week or two of shifts with breaks, overtime and pay. The hours calculator is quicker when you only need the length of one time span, such as 9:15 AM to 3:40 PM.
Sources & references
- Fact Sheet #22: Hours Worked Under the FLSA, US Department of Labor
- Fact Sheet #23: Overtime Pay Requirements of the FLSA, US Department of Labor
- 29 CFR Part 785: Hours Worked (§785.18, §785.19, §785.48), Electronic Code of Federal Regulations
- Overtime FAQ, California Department of Industrial Relations
This time card calculator is for estimating hours and pay. Your employer’s payroll records, union contract and state law decide what you are actually paid. Gross pay excludes taxes and deductions.