Overtime calculator

How overtime is counted

This tool does not look at clock-in times. It takes the hours you type for one week and splits them: regular is the first 40, overtime is the rest. If you add a rate, overtime is estimated at 1.5×. That is the federal FLSA weekly baseline, not a map of every state wage-and-hour rule.

regular        = min(week, 40 hours)
overtime       = max(0, week − 40 hours)
decimal hours  = minutes ÷ 60
gross estimate = regular × rate + overtime × rate × 1.5

Worked example

Five 8-hour weekdays → 40:00 regular, 0:00 overtime. Add Saturday 4 hours → 4:00 overtime. At $20/hour that is $800 regular + $120 overtime = $920 gross estimate, before taxes.

Decimal hours cheat sheet

15 minutes = 0.25 hours. That is what most payroll systems want.

FAQ

Does weekly overtime start after 40 hours?

Yes. This page splits a workweek at 40 hours: the first 40 are regular, anything above that is overtime. That matches the federal FLSA weekly baseline for most non-exempt employees in the US. Daily overtime (for example California after 8 hours in a day) is not applied here. Treat the split as a weekly estimate only.

How is the 1.5× overtime estimate calculated?

If you enter an hourly rate, overtime hours are multiplied by rate × 1.5, then added to regular hours × rate. That is a gross estimate before taxes, shift differentials, or deductions. Leave the rate blank if you only want the hour split.

Is this 50-state overtime law?

No. It is not 50-state legal advice. This calculator uses the federal FLSA weekly baseline only: hours over 40 in a workweek at 1.5×. Daily overtime, seventh-day rules, double time, union contracts, and salaried exemptions are not applied. Your employer or state may differ.

How does this relate to the hourscard.com time card?

The time card at hourscard.com is for punch-in and punch-out, unpaid lunch, overnight shifts, and a printable week. This overtime page takes a week total — or hours by day — and splits regular vs overtime after 40 hours. Use the time card to get the hours; use this page when you already have the hours and want the OT split and optional 1.5× estimate.

Why show both h:mm and decimal hours?

Timesheets often print 8:15. Payroll often wants 8.25. Minutes ÷ 60 is the conversion: 15 minutes = 0.25 hours, 30 minutes = 0.50. The totals bar shows both so you can copy whichever your employer uses.

Can I enter hours by day instead of a week total?

Yes. Switch to By day and type Monday through Sunday. Blank days count as zero. The week is the sum, then the same 40-hour split applies. Formats: 45, 45.5, 45:30, 8:15, 45h, 45h 30m, or 90m.

Is this official payroll?

No. It is an estimate of hours and, if you enter a rate, gross pay. It does not withhold tax, apply differentials, or write a paycheck. Do not use it as a system of record. Check the numbers against your employer's timekeeping and your pay stub.