JLJosh Liljenquist

Work time calculator

Time card calculator

Total a weekly time card from as many as seven work periods. The calculator subtracts each unpaid break, handles a shift that crosses midnight, and separates hours above your chosen weekly threshold for display without making payroll or legal determinations.

By

Up to 7 periodsDecimal and clock totalsOvertime display

Enter known values

Clock inClock outUnpaid breakPeriod 1Period 2Period 3Period 4Period 5Period 6Period 7

Enter the known values and select Calculate.

How to use this calculator

  1. Enter a clock-in and clock-out time for each worked period.
  2. Enter only unpaid break minutes; paid breaks stay in elapsed time.
  3. Change the display threshold only when you need a different weekly split.
  4. Copy or print the completed totals for your own records.

Formula and method

Daily hours = elapsed clock-out time − clock-in time − unpaid break. Weekly hours are the sum of completed rows. Displayed overtime = max(weekly hours − entered threshold, 0).

Worked example

Five 8:00 a.m.–4:30 p.m. shifts with 30-minute unpaid breaks total 40.00 hours. If the display threshold is 40 hours, the result shows 40.00 regular and 0.00 overtime hours.

Assumptions and result interpretation

  • A clock-out earlier than clock-in is treated as crossing midnight once.
  • The overtime line is arithmetic display only, not a statement about legal eligibility or payroll policy.
  • The tool does not calculate wages, taxes, rounding policies, or jurisdiction-specific rules.
  • Times remain in the browser and are not sent as analytics parameters.

Understanding the result

Decimal hours are useful for totaling, while hours-and-minutes are often easier to compare with a schedule. The result shows both representations. Confirm how an employer rounds punches before using a result in a formal record.

Common mistakes

  • Entering a paid break as unpaid
  • Leaving half of a time row blank
  • Using the weekly threshold as a payroll rule without checking policy
  • Combining separate shifts into one row when a break should be tracked

Methodology note

The calculation follows the deterministic formula shown above. It does not rely on a competitor calculator or a remote calculation service.

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Use this result as a calculation aid. Confirm input definitions, required precision, and any governing policy or professional standard separately.