Time Card Calculator

Under the standard U.S. federal rule (FLSA), overtime is any hours worked beyond 40 in a single work week, paid at 1.5x the regular hourly rate — commonly called "time and a half." For example, if you work 42 hours in a week at $20/hour, you get 40 regular hours ($800) plus 2 overtime hours at $30/hour ($60), for a total of $860. Some states (like California) and some employers also apply daily overtime rules (e.g., over 8 hours in a day); this calculator uses the standard weekly-total method, which covers the majority of U.S. employers.

Unpaid breaks — most commonly a lunch break — are subtracted from the total time between clock-in and clock-out to get actual hours worked. For example, if you clock in at 9:00 AM and out at 5:30 PM (8.5 hours total) and take a 30-minute unpaid lunch, your paid hours worked is 8.0 hours. Enter your break minutes for each day and this calculator automatically deducts them before totaling your weekly hours.

Payroll systems typically require hours in decimal format rather than hours and minutes. To convert, divide the minutes portion by 60 and add it to the whole hours — for example, 8 hours 15 minutes becomes 8 + (15/60) = 8.25 decimal hours. This calculator does that conversion automatically for every day and for the weekly total, so you can copy the decimal values directly into payroll or invoicing software.

The standard overtime threshold under U.S. federal law is 40 hours per work week, and the standard multiplier is 1.5x the regular hourly rate (time and a half). Some employers offer double time (2x) for holidays or hours beyond a higher threshold, and a handful of states impose daily overtime rules in addition to the weekly rule. This calculator defaults to 40 hours and a 1.5x multiplier, but both fields are editable so you can match your specific employer's policy.

For a shift that starts before midnight and ends after midnight — for example, clocking in at 10:00 PM and out at 6:00 AM — the calculator automatically detects that the clock-out time is earlier than the clock-in time and treats it as the next day, adding 24 hours before computing the difference. This means an overnight shift is credited with its full duration (8 hours in this example) rather than showing as negative or zero.

No — this calculator applies the standard federal (FLSA) weekly overtime rule, where overtime is based only on total hours worked across the full week, not on any single day. A handful of states (notably California and Alaska) also require daily overtime after 8 hours worked in one day, even if the weekly total stays under 40. If your state or employer uses daily overtime rules, calculate that portion separately — this tool is best suited to standard weekly-only overtime policies.