How do I enter an overnight shift?

Just enter the times normally, e.g. "22:00-06:00". When the clock-out is earlier than the clock-in, the calculator assumes the shift crossed midnight and adds 24 hours, giving 8 hours in that example.

How is overtime calculated?

Hours worked beyond your weekly threshold are counted as overtime. The default threshold is 40 hours, reflecting the U.S. Fair Labor Standards Act, under which most hourly employees earn 1.5× pay beyond 40 hours in a workweek.

Does this handle daily overtime rules?

No — it uses a weekly threshold only. Some states (notably California) require overtime after 8 hours in a single day. For those rules, check each day separately or consult your state labor department.

Should breaks be subtracted?

Subtract unpaid breaks (like an unpaid lunch); do not subtract paid breaks. Add the unpaid break minutes after each shift's times. Whether a break is paid depends on your employer's policy and local law.

How do I convert decimal hours to hours and minutes?

The whole number is the hours; multiply the decimal part by 60 for minutes. For example, 8.25 hours is 8 hours and 0.25 × 60 = 15 minutes. The calculator shows both forms.

How do I enter an overnight shift?

Just enter the times normally, e.g. "22:00-06:00". When the clock-out is earlier than the clock-in, the calculator assumes the shift crossed midnight and adds 24 hours, giving 8 hours in that example.

How is overtime calculated?

Hours worked beyond your weekly threshold are counted as overtime. The default threshold is 40 hours, reflecting the U.S. Fair Labor Standards Act, under which most hourly employees earn 1.5× pay beyond 40 hours in a workweek.

Does this handle daily overtime rules?

No — it uses a weekly threshold only. Some states (notably California) require overtime after 8 hours in a single day. For those rules, check each day separately or consult your state labor department.

Should breaks be subtracted?

Subtract unpaid breaks (like an unpaid lunch); do not subtract paid breaks. Add the unpaid break minutes after each shift's times. Whether a break is paid depends on your employer's policy and local law.

How do I convert decimal hours to hours and minutes?

The whole number is the hours; multiply the decimal part by 60 for minutes. For example, 8.25 hours is 8 hours and 0.25 × 60 = 15 minutes. The calculator shows both forms.

Time Card Calculator (Clock In/Out + Breaks)

Add up worked hours from multiple clock-in/clock-out entries with break deductions, and see total and overtime hours.

Result

Total hours

35.25 h

35h 15m

Shifts counted5
09:00–17:00 (−30m)7.50 h
09:00–17:30 (−30m)8.00 h
08:30–16:308.00 h
09:00–13:004.00 h
10:00–18:30 (−45m)7.75 h
Total35.25 h (35h 15m)
Regular hours35.25 h
Overtime hours0.00 h

Source: Worked hours = (clock-out − clock-in) − unpaid break, summed across shifts. Overtime = hours beyond the weekly threshold.

Note — Computes clock hours minus breaks. US federal overtime (FLSA) is generally 1.5× pay beyond 40 hours/week, but state rules (e.g. daily overtime in California) and rounding policies vary — confirm with your employer or local law.

Step-by-step

Each shift: (clock-out − clock-in) − break minutes.
Sum across 5 shifts = 35.25 hours (35h 15m).
Hours beyond 40/week are overtime: 0.00 h overtime, 35.25 h regular.

How to use this calculator

Enter one shift per line: start-end in 24-hour time, then optional break minutes.
Use the same format for each line, e.g. "08:30-16:30 30".
Set the weekly overtime threshold (40 is the US default; 0 disables it).
Read total hours, the per-shift breakdown, and the regular/overtime split.

About this calculator

A time card calculator adds up the hours you actually worked across a set of shifts, after deducting unpaid breaks. Enter each shift on its own line as a clock-in and clock-out time in 24-hour format, optionally followed by the number of break minutes to subtract — for example, "09:00-17:30 30" is a shift from 9:00 a.m. to 5:30 p.m. with a 30-minute unpaid break, counting as 8 hours. The tool handles overnight shifts (where the clock-out is earlier than the clock-in) and totals everything into decimal hours and an hours-and-minutes figure. It can also split the week into regular and overtime hours using a threshold you set, which defaults to the 40-hour standard behind U.S. federal overtime rules. Because overtime law and time-rounding policies vary by state and employer, treat the overtime split as a guide.

How it works — the formula

Shift hours = (clock-out − clock-in, +24h if overnight) − break
Total = Σ shift hours
Overtime = max(0, Total − weekly threshold)

Each shift’s span minus its break gives worked hours; the weekly total splits into regular and overtime at the threshold.

Source: U.S. DOL — Fair Labor Standards Act (FLSA)

Worked examples

Example 1

09:00-17:30 with 30m break

Inputs:: entries=09:00-17:30 30
Output:: 8.0 hours

Example 2

Five shifts ~8h each

Inputs:: entries=09:00-17:00 30 (×5)
Output:: ~37.5 h, no overtime at 40

Example 3

Overnight 22:00-06:00

Inputs:: entries=22:00-06:00
Output:: 8.0 hours

Limitations

Weekly overtime threshold only; no daily-overtime rules.
Times must be 24-hour HH:MM; unparsed lines count as zero.
Does not apply pay rates, rounding policies, or paid-break rules.

Hour totals are exact; overtime/pay rules vary by jurisdiction and employer.

Frequently asked

Subtract the clock-in time from the clock-out time, then subtract any unpaid break. From 9:00 to 17:30 is 8.5 hours; minus a 30-minute break leaves 8.0 hours. This tool does that for each shift and sums them.