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Time Card Calculator

Total shift hours and estimate regular/overtime pay using an entered threshold.

Calculator inputs

Regular and overtime hours

These hours partition the total paid time under the entered period threshold. They do not establish legal overtime eligibility.

Regular and overtime hoursRegular hours: 15 hours (100.0%)Overtime hours: 0 hours (0.0%)Total15
  • Regular hours15 hours100.0%
  • Overtime hours0 hours0.0%

Worked example: Time Card Calculator

Two workdays. This fixed reference example shows one complete scenario; the interactive results above use your current inputs.

View the example inputs
Shifts: label,start,end,unpaid break minutes
Mon,09:00,17:00,30 Tue,09:00,17:00,30
Hourly pay
20 $/hour
Overtime threshold for this supplied period
40 hours
Overtime pay multiplier
1.5
Calculated results for the fixed example
Calculated quantityExample result
Total paid hours15 hours
Regular hours15 hours
Overtime hours0 hours
Gross pay estimate$300.00

Reading calendar dates, clock times and elapsed duration

Choose a calendar convention deliberately

A calendar month does not have a fixed number of days. Adding a month to the final day of a month therefore needs an explicit rule. Likewise, an inclusive count of dates is different from an elapsed difference between endpoints. The notes state which convention the current tool uses.

Clock times are not durations. An overnight shift needs a next-day assumption, and an unpaid break reduces paid time rather than changing the clock-out time. Monday–Friday counts do not automatically remove public holidays.

Distinguish wall-clock arithmetic from real elapsed time

Daylight-saving changes can skip a local clock time or repeat one. An IANA-zone conversion can identify a real instant and handle those transitions. Arithmetic on timezone-free date/time fields instead treats the entries as civil values without resolving a zone.

Check the zone, date range and endpoint convention when comparing systems. Calendar age can also depend on how a February 29 anniversary is handled; the arithmetic convention on this page does not determine jurisdiction-specific legal age.

Formula and calculation method

Each shift deducts its unpaid break; overnight shifts span one midnight. Hours above the chosen period threshold use the entered pay multiplier.

Threshold and multiplier are user-entered payroll assumptions, not a determination of jurisdiction-specific overtime eligibility or daily/weekly legal rules.

Frequently asked questions

How does this calculator work?

Each shift deducts its unpaid break; overnight shifts span one midnight. Hours above the chosen period threshold use the entered pay multiplier.

What assumptions should I check?

Threshold and multiplier are user-entered payroll assumptions, not a determination of jurisdiction-specific overtime eligibility or daily/weekly legal rules.

Can I save or print this calculation?

Use Copy link with inputs to reproduce the scenario, Download results for a text record, or Print. Where a schedule is shown, its CSV download includes every row.