How to use the Hours calculator
- Enter your numbers. Fill in hourly rate, unpaid break per day, overtime after, overtime multiplier.
- Enter time card details. Fill in mon in, mon out, tue in, tue out, wed in, wed out, thu in, thu out, fri in, fri out, sat in, sat out, sun in, sun out.
- Read your results. Results update instantly. The headline shows the total hours this week; the breakdown and table below show the details.
How hours are calculated
For each day, the calculator subtracts the clock-in time from clock-out (adding 24 hours for overnight shifts) and removes your unpaid break. Weekly hours above the overtime threshold (40 under the federal Fair Labor Standards Act) are paid at your overtime multiplier, typically 1.5×.
The formula
Pay = regular hours × rate + overtime hours × rate × multiplier
Good to know
Some states, like California, also require daily overtime (over 8 hours in a day). This calculator uses weekly overtime only.
Worked example
With these inputs (main ones shown): hourly rate (optional)$25; unpaid break per day (min)30; overtime after (hrs/week)40; overtime multiplier1.5; mon in09:00; mon out17:30; tue in09:00; tue out17:30.
The calculator gives a total hours this week of 40.00 (40h 0m). Other results: regular hours40.00, overtime hours0.00, gross pay$1,000.00, days worked5.
What your results mean
Total hours are the sum of each day’s shift minus breaks. Hours over the overtime threshold (40 per week under federal law) are paid at the overtime multiplier.
Tips
- Some states (like California) also require daily overtime over 8 hours; check your state’s rules.
- Overnight shifts are handled automatically when the end time is earlier than the start.
Frequently asked questions
How do I calculate hours worked?
Subtract the start time from the end time for each day, subtract unpaid breaks, then add up the days.
How is overtime calculated?
Under the federal Fair Labor Standards Act, non-exempt employees earn at least 1.5× their regular rate for hours over 40 in a workweek.
How do I convert minutes to decimal hours?
Divide minutes by 60: 45 minutes is 0.75 hours.
How do I convert minutes to decimal hours?
Divide minutes by 60: 7 hours 45 minutes = 7.75 hours.
Are breaks paid?
Under federal law, short breaks (5–20 minutes) are paid; meal breaks of 30+ minutes can be unpaid.
Does it handle overnight shifts?
Yes. If clock-out is earlier than clock-in, it assumes the shift ended the next day.
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