Skip to content

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

Start, end and unpaid break for each day of the workweek
DayStartEndUnpaid break (min)Hours
Saturday
0h 00m
Sunday
0h 00m
Monday
9h 00m
Tuesday
9h 00m
Wednesday
9h 30m
Thursday
9h 00m
Friday
8h 00m
$
hrs

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.

  1. 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.
  2. Day hours = (day span minus unpaid break minutes) divided by 60. It never goes below zero.
  3. Total hours = the sum of the seven day totals.
  4. Overtime hours = total hours minus the weekly threshold (40 by default), or zero if that is negative. Regular hours = total hours minus overtime hours.
  5. Gross pay = rate x regular hours + rate x 1.5 x overtime hours.
Assumptions built into the time card calculator
ItemHow the calculator treats it
WorkweekSeven days from Saturday to Friday. You choose which seven days to enter; there is no averaging across weeks.
OvertimeWeekly only: hours over the threshold at 1.5 times the rate. No daily overtime and no double time.
Unpaid breakSubtracted from the day as minutes you type. Paid breaks should be left at 0.
MidnightAn end earlier than the start adds 24 hours. A start and end that are equal count as 0.
RoundingNone. 9:30 is 9.5 hours.
Pay rateOne 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?
Subtract the start time from the end time, subtract unpaid break minutes, and convert minutes to hours. For 6:00 to 15:30 with a 30-minute break, that is 9.5 hours minus 0.5, or 9.0 hours. Add the days for the week total.
When does overtime start under federal law?
Overtime starts after 40 hours worked in a workweek for non-exempt employees, at one and one-half times the regular rate. Source: U.S. Department of Labor.
Should I deduct lunch from the time card?
Only deduct a meal period if the worker is fully relieved of duty for it (29 CFR 785.19). Short rest breaks are generally paid time (29 CFR 785.18), so do not deduct them. Leave the break field at 0 for paid breaks. State meal-period rules differ, so check yours.
How does the calculator handle a shift that crosses midnight?
If the end time is earlier than the start time, it adds 24 hours to the span. A 22:00 start with a 06:00 end is 8 hours before any break.
Does this work for California?
Not fully. California also requires daily overtime and double time, which this weekly calculator does not apply. Use the California overtime calculator.

Sources

  1. 1.U.S. Department of Labor, Overtime Pay · U.S. Department of Labor
  2. 2.29 CFR 785.18, Rest · Legal Information Institute, Cornell Law School
  3. 3.29 CFR 785.19, Meal · Legal Information Institute, Cornell Law School
  4. 4.29 U.S.C. 207, Maximum hours · Legal Information Institute, Cornell Law School

Get started

See ZeroBadge on your workforce.

Tell us how your crews work today. We will show you a badge-recorded week built from your own jobsites.

What we will walk through

  • 01How the badge records a shift
  • 02Your jobsites as geofences
  • 03The weekly timesheet and approval
  • 04Sending approved hours to payroll