Fill in clock-in and clock-out times and the unpaid break for each day of the week. The calculator totals your hours in h:mm and decimal form, splits regular and overtime hours under the federal 40-hour rule or a daily 8-hour rule, and multiplies by your hourly rate for gross pay. Overnight shifts are handled automatically, and you can print or copy the summary for payroll.
Worked example: five days of 9:00 to 5:30 with a 30-minute lunch is 8.0 hours a day, 40.0 for the week — no overtime. Add a Saturday shift of 8:00 to 2:00 with no break (6.0 h) and the week is 46.0 hours: 40 regular, 6 overtime. At $20 an hour that is $800 + 6 × $30 = $980 gross.
Paid breaks (short rest breaks of 5–20 minutes are paid time under federal rules) should be entered as 0; only bona fide unpaid meal periods of 30 minutes or more are subtracted.
Minutes to decimal hours
Minutes
Decimal
Minutes
Decimal
5
0.08
35
0.58
10
0.17
40
0.67
15
0.25
45
0.75
20
0.33
50
0.83
25
0.42
55
0.92
30
0.50
60
1.00
Overtime rules by state
The federal Fair Labor Standards Act sets overtime at 1.5× after 40 hours in a workweek and applies in every state. Four states add daily overtime: California (1.5× after 8 hours a day and on the seventh consecutive day, 2× after 12 hours), Alaska and Nevada(after 8 hours a day, Nevada only for lower-wage employees) and Colorado (after 12 hours a day). Salaried exempt employees, most independent contractors and some agricultural and seasonal workers are excluded. Union contracts and employer policies can be more generous, never less.
Frequently asked questions
Subtract the start time from the end time and take off unpaid breaks. 9:00 AM to 5:30 PM is 8 hours 30 minutes; minus a 30-minute lunch that is 8 hours. The calculator does this for each day, handles overnight shifts (clock out after midnight), and adds the week up in both h:mm and decimal hours.
Divide the minutes by 60: 15 minutes = 0.25 h, 20 minutes = 0.33 h, 30 minutes = 0.50 h, 45 minutes = 0.75 h. So 7 hours 40 minutes is 7.67 hours. Payroll systems multiply decimal hours by the hourly rate, which is why both formats are shown.
Under the federal FLSA, non-exempt employees earn 1.5× their regular rate for hours over 40 in a workweek. California, Alaska, Nevada and Colorado also require daily overtime after 8 hours in a day (California adds double time after 12 hours and on the seventh consecutive day). Choose the rule that matches your state; the calculator never counts the same hour twice.
Federal rules allow rounding to the nearest quarter hour as long as it is neutral over time — rounding both up and down (the “7-minute rule”: 7 minutes rounds down, 8 rounds up). Some states, notably California after 2021 court rulings, expect exact minutes for meal periods. Use exact minutes unless your employer’s policy says otherwise.
Overtime is calculated per workweek, so run each week separately and add the totals; the Copy summary button makes that easy. A biweekly period is two independent 40-hour weeks — 45 hours one week and 35 the next still means 5 hours of overtime.
Cite this calculator
APACalcBrew. (2026). Time Card Calculator. https://calcbrew.com/time-card-calculator