Tools · Timesheets
Time card calculator
Enter the start time, end time and unpaid break for each day of the workweek. The calculator subtracts the break from each day, adds the days up, and treats hours over 40 in the week as overtime at one and one-half times the rate, which is the federal FLSA rule. An end time earlier than the start counts as crossing midnight.
Last updated
This is general information, not legal advice. Laws differ by state and change over time. Check the primary sources below and talk to an employment lawyer about your situation.
Calculate a weekly time card
The week runs Saturday to Friday, the default workweek for construction crews on ZeroBadge. Leave a day blank if it was not worked. The pay rate is optional. Nothing you type is sent anywhere.
Weekly time card calculator
| Day | Start | End | Unpaid break (min) | Hours |
|---|---|---|---|---|
| Saturday | 0h 00m | |||
| Sunday | 0h 00m | |||
| Monday | 9h 00m | |||
| Tuesday | 9h 00m | |||
| Wednesday | 9h 30m | |||
| Thursday | 9h 00m | |||
| Friday | 8h 00m |
40 under the federal FLSA
- Total hours
- 44h 30m (44.50)
- Regular hours
- 40.00
- Overtime hours (1.5x)
- 4.50
- Gross pay before deductions
- $1,496.00
Weekly overtime only. Some states, such as California, also require daily overtime; use the California overtime calculator for that. An end time earlier than the start counts as crossing midnight.
How does the calculator work out hours and overtime?
The calculator works in whole minutes for each day, then adds the week. It does not round to quarter hours or tenths, so what you see is the exact time between the two clock times.
- Day span = end time minus start time, in minutes. If the end is earlier than the start, 24 hours is added, so 22:00 to 06:00 is 8 hours.
- Day hours = (day span minus unpaid break minutes) divided by 60. It never goes below zero.
- Total hours = the sum of the seven day totals.
- Overtime hours = total hours minus the weekly threshold (40 by default), or zero if that is negative. Regular hours = total hours minus overtime hours.
- Gross pay = rate x regular hours + rate x 1.5 x overtime hours.
| Item | How the calculator treats it |
|---|---|
| Workweek | Seven days from Saturday to Friday. You choose which seven days to enter; there is no averaging across weeks. |
| Overtime | Weekly only: hours over the threshold at 1.5 times the rate. No daily overtime and no double time. |
| Unpaid break | Subtracted from the day as minutes you type. Paid breaks should be left at 0. |
| Midnight | An end earlier than the start adds 24 hours. A start and end that are equal count as 0. |
| Rounding | None. 9:30 is 9.5 hours. |
| Pay rate | One rate for the whole week. It does not blend rates for different jobs or adjust for bonuses, shift differentials or per diem. |
What is the federal overtime rule?
Under the Fair Labor Standards Act, covered employees who are not exempt must be paid at least one and one-half times their regular rate for hours worked over 40 in a workweek. The Department of Labor describes the workweek as a fixed, recurring block of seven consecutive 24-hour periods that can start on any day and hour. The statute is 29 U.S.C. 207.
The federal rule is a weekly one. It does not require overtime for a long day on its own, and it does not allow averaging hours across two weeks to avoid overtime. Weekend or holiday work is overtime only if it pushes the week past 40.
What does the default week work out to?
With the default inputs, the crew member works five weekdays, totals 44 hours 30 minutes, and earns $1,496.00 before deductions, of which 4.5 hours are overtime.
Defaults: Monday to Friday, 6:00 start, 30-minute unpaid lunch, $32.00 an hour, weekend off
- Monday 6:00 to 15:30
- 9.5 hours span - 0.5 break = 9.0 hours
- Tuesday 6:00 to 15:30
- 9.5 - 0.5 = 9.0 hours
- Wednesday 6:00 to 16:00
- 10.0 - 0.5 = 9.5 hours
- Thursday 6:00 to 15:30
- 9.5 - 0.5 = 9.0 hours
- Friday 6:00 to 14:30
- 8.5 - 0.5 = 8.0 hours
- Total hours
- 9.0 + 9.0 + 9.5 + 9.0 + 8.0 = 44.5
- Regular hours
- 40.0
- Overtime hours
- 44.5 - 40 = 4.5
- Regular pay
- 40 x $32.00 = $1,280.00
- Overtime pay
- 4.5 x $32.00 x 1.5 = $216.00
- Gross pay before deductions
- $1,280.00 + $216.00 = $1,496.00
Example hours and rate only. This is a weekly-overtime calculation; a state with daily overtime would give a different result.
A night shift that crosses midnight works the same way. A start of 22:00 and an end of 06:00 is 8 hours of span, and a 30-minute unpaid break leaves 7.5 hours for that shift.
How should you use the result?
Use it to check a timesheet before payroll, to estimate a week's cost, or to see how much overtime a schedule creates before you set it. It is a check, not a payroll record.
- Checking a handwritten card: type in the clock times. If your total differs from the foreman's by more than the break, one of the two has a math or entry error.
- Planning a week: drop the Friday end time by 30 minutes and watch the overtime fall by the same 0.5 hour.
- Costing overtime: compare the gross at 40 hours with the gross at 44.5 to see what an extra half-day of crew time costs per person.
- Moving between sites: hours are the same whichever jobsite they were worked at. Keep the jobsite and cost code on the card so labor can be allocated.
When start and end times come from a badge instead of memory, the hours are recorded as they happen. See automatic timesheets. Drive time between sites belongs on the card too; read travel time between job sites.
Frequently asked questions
How do you calculate hours on a time card?
When does overtime start under federal law?
Should I deduct lunch from the time card?
How does the calculator handle a shift that crosses midnight?
Does this work for California?
Sources
- 1.U.S. Department of Labor, Overtime Pay · U.S. Department of Labor
- 2.29 CFR 785.18, Rest · Legal Information Institute, Cornell Law School
- 3.29 CFR 785.19, Meal · Legal Information Institute, Cornell Law School
- 4.29 U.S.C. 207, Maximum hours · Legal Information Institute, Cornell Law School
Keep reading
- ToolCalifornia overtime calculatorDaily overtime, double time and the seventh-day rule for one workweek.
- ToolConstruction timesheet templateA weekly sheet a foreman can fill in, as Excel or PDF.
- GuideTravel time between job sitesWhich drive time counts as hours worked.
- SolutionOvertime trackingSeeing overtime build during the week, not after payroll.
- SolutionReplace paper timesheetsTimesheets built from the badge record, so the office stops re-keying the week.
