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TheCalcuLab

Work hours, unit converter & time zone plannerTime card calculator: total shifts and estimate gross pay

Add work shifts, deduct unpaid breaks, and estimate gross pay with an optional weekly overtime threshold and multiplier. You can also convert time units and compare a meeting across time zones. The timecard treats all entered shifts as one workweek and uses clock times without dates or time zones. It cannot account for daylight-saving changes within a shift or determine legal payroll obligations. The separate time-zone planner uses the selected meeting date and zone.

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Time Card & Billable Hours Calculator

Log shifts, deduct breaks, and compute weekly gross wages with overtime.

$
Logged Shifts (5)
7 hrs 30 mins$188 (7.50h)
7 hrs 30 mins$188 (7.50h)
7 hrs 30 mins$188 (7.50h)
7 hrs 30 mins$188 (7.50h)
7 hrs 30 mins$188 (7.50h)
Total Time37 hrs 30 mins
Decimal Hours37.50 hrs
Overtime Hours0.00 hrs
Gross Earnings$938

How to use

  1. 1

    Enter your Shift Start Time, End Time, and unpaid break duration (in minutes).

  2. 2

    Set your Hourly Pay Rate ($) and optional Overtime threshold (default 40 hours).

  3. 3

    Use Pre-fill Mon-Fri for five 9-to-5 shifts with 30-minute unpaid breaks: 37.5 payable hours.

  4. 4

    Inspect the cumulative weekly breakdown (Total Time, Decimal Hours, Overtime, and Gross Earnings).

  5. 5

    Switch tabs to convert time units in real time or coordinate meetings across international time zones with daylight-saving accuracy.

Benefits

Decimal-hour conversion

Convert clock durations into decimal hours, such as 7 hours 45 minutes = 7.75 hours.

Overnight Shift Detection

Intelligently detects shifts crossing past midnight and calculates accurate durations without manual date adjustments.

Local storage and auto-save

Timesheets are saved in this browser when local storage is available. Clearing site data removes them; export a copy if you need a record.

Export to CSV & Clipboard

Download itemized timesheets for clients and accounting software or copy summaries with one click.

How the Calculations Work

Decimal Hours=(Tend−Tstart+Δovernight)−Tbreak60\text{Decimal Hours} = \frac{(T_{\text{end}} - T_{\text{start}} + \Delta_{\text{overnight}}) - T_{\text{break}}}{60}
Decimal Hours
Exact fractional hours for payroll (e.g. 7h 45m = 7.75h)
Overnight Offset
Adds 24 hours (1,440 mins) if end time crosses midnight
Break Duration
Only applicable unpaid breaks are subtracted from payable shift time
Overtime Pay
Uses the selected weekly threshold and multiplier; defaults are 40 hours and 1.5 times

Shift hours are the difference between start and end clock times, minus entered unpaid breaks; an earlier end time is treated as the next day. Equal start and end times count as zero hours. Enter only breaks that are unpaid under your applicable rules. Overtime applies after the total threshold across this one timesheet. Split separate workweeks into separate calculations. Results exclude taxes, premiums, and jurisdiction-specific payroll rules.

Worked Timesheet Example

Working Monday through Friday, 9:00 AM to 5:00 PM with a 30-minute unpaid lunch break equals 7 hours and 30 minutes (7.50 decimal hours) per day. Over 5 shifts, that totals 37 hours and 30 minutes (37.50 hours). At an hourly rate of $25.00/hour, gross earnings equal $937.50.

Understanding your results

The result totals the shifts entered, subtracts the break minutes you specify, and applies the overtime threshold and multiplier you select. It treats entries as one workweek and estimates gross pay; it does not determine which breaks are legally unpaid or replace payroll rules.

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Sources and methodology

These resources explain related concepts. They do not certify or endorse this calculator. See the assumptions and worked example above.

Frequently asked questions

To convert minutes to decimal hours, divide the minutes by 60 and add the result to the whole hours. For example, 7 hours and 30 minutes is 7 + (30 ÷ 60) = 7.50 decimal hours. Similarly, 8 hours and 15 minutes is 8 + (15 ÷ 60) = 8.25 decimal hours, and 7 hours and 45 minutes is 7.75 decimal hours.

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Figures are estimates for education only — not financial advice. Results depend on the assumptions you enter. Read the full disclaimer.