TabSalary calculator guide
Turn a week of shifts into hours and gross pay
This weekly time card converts each shift into decimal hours, subtracts unpaid breaks, then separates the total at a customizable regular-hours threshold.
Independently built and maintained · Published 2026-08-09 · Last reviewed 2026-08-23
Paper time sheets hide two kinds of money: minutes that vanish into rounded numbers and overtime that appears on Friday afternoon. Adding clock times by hand invites both problems, especially with overnight shifts where the math crosses midnight and breaks that may or may not be deductible from pay.
The calculator handles the mechanics precisely. Each shift is computed to the minute — an overnight shift ending earlier than it starts is carried into the next day automatically — then unpaid breaks are subtracted, the week is totaled, and hours split at the overtime threshold you set before applying the rate and multiplier. Checking one real week against a paycheck is the fastest way to confirm your employer's rounding and break practices are costing you nothing.
How the calculation works
Shift hours = clock-out − clock-in − unpaid break; gross pay = regular pay + overtime pay
- Convert each clock time into minutes after midnight.
- Handle overnight shifts by carrying the clock-out time into the next day.
- Subtract unpaid breaks, total the week, and apply the overtime threshold and multiplier.
Worked example
Five 8:30 AM–5:00 PM shifts with 30-minute unpaid breaks total 40 hours. At $22 per hour, estimated weekly gross pay is $880 before deductions. Add a sixth 6-hour Saturday shift and the total becomes 46 hours: 40 regular ($880) plus 6 overtime hours at $33 ($198), or $1,018 all-in.
What this estimate does not include
- The tool does not determine whether activities or breaks legally count as paid time.
- Rounding policies, split shifts, multiple rates, and state daily-overtime rules are excluded.
- The default 40-hour threshold is editable for scenario planning.
Use the result as a planning estimate, not as personalized financial, tax, legal, or investment advice.
Source ledger
Primary references- U.S. Department of Labor, Wage and Hour Division Fact Sheet #22: Hours Worked Under the FLSA — compensable time, rest periods, and meal-period rules that time cards implement.
- U.S. Department of Labor, Wage and Hour Division: recordkeeping and overtime guidance for covered employees.
- TabSalary formula review: shifts calculate to whole minutes before any display rounding.
Rates and rules are checked against the primary source before publication and re-checked whenever the source changes. External links open in a new tab; calculator inputs never leave your browser.