Adding up a week's worth of clock times by hand is tedious and error-prone — especially with lunch breaks, split shifts and the occasional overnight. This time card calculator does the whole week on one screen: enter each day's in and out times, subtract unpaid breaks, and it totals everything, splits out overtime and estimates your gross pay.
It is built for hourly workers checking a paycheck, managers spot-checking a timesheet, and anyone who wants the math behind "how many hours did I work this week" without opening a spreadsheet. All entries stay in your browser — nothing is uploaded.
Part of the Payroll Calculators collection on CountCrunch.
How hours are totaled
Each day is computed in minutes first (which avoids the rounding drift of adding decimals), then converted:
Overnight shifts are handled: if clock-out is earlier than clock-in, the shift is treated as crossing midnight. Times can be typed as 8:30 AM, 17:30 or 5:30p.
How overtime is split
Under the federal Fair Labor Standards Act, non-exempt employees earn 1.5× their regular rate for hours over 40 in a workweek. The calculator applies that split automatically:
Paid leave (PTO, holidays) counts toward pay but not toward the 40-hour overtime threshold under federal rules. For daily-overtime states or double time, see the overtime pay calculator.
Worked example
Five days, 8:00 AM–4:30 PM with a 30-minute unpaid lunch = 8 hours/day = 40 hours. Add a Saturday 9:00 AM–1:00 PM shift (4 hours, no lunch) → 44 hours: 40 regular + 4 overtime. At $18/hour: 40 × $18 + 4 × $27 = $828 gross.
Tips for an accurate time card
- Record breaks honestly. Unpaid lunches come off; short paid breaks (around 5–20 minutes) stay on under federal rules.
- Use decimal hours for payroll. 7:45 is 7.75 hours, not 7.45 — the most common timesheet mistake in existence.
- Keep your own copy. Screenshot or export the week; it is your evidence if a paycheck looks wrong.
Frequently asked questions
How do I calculate my hours for the week?
For each day, subtract clock-in from clock-out and remove unpaid breaks, then add the days together. The calculator above does the whole week at once, including overnight shifts.
How many hours is full time?
Typically 40 hours per week in the US. Federal overtime rules kick in after 40 hours in a workweek for non-exempt employees.
Do lunch breaks count as hours worked?
Unpaid meal breaks of 30+ minutes where you are fully relieved of duty do not count. Short rest breaks of about 5–20 minutes do count as paid work time under federal rules.
What if I forgot to clock out?
Estimate honestly from when you actually stopped working, note it, and tell your manager — most payroll systems let them correct the punch. Consistently reconstructing times from memory is where errors creep in.
How do I convert my hours to decimal for payroll?
Divide minutes by 60: 7 hours 30 minutes = 7.5, 7 hours 45 minutes = 7.75. The results panel shows both formats.