Time & Duration
Calculate your work hours between two times, accounting for unpaid breaks.
Hours Worked
8:00 H:MM
8.00 hours (decimal)
The calculator handles overnight shifts automatically. Enter times in 24-hour format (e.g., 09:00, 17:30). The break is deducted from your total duration.
An hours calculator is a time-duration tool that determines the exact hours and minutes elapsed between a start time and end time, with optional break deduction. It converts elapsed time into both H:MM format and decimal hours (useful for payroll and timesheets), and works seamlessly across midnight for overnight shifts.
The calculator takes your start time and end time, computes the minutes between them, subtracts any unpaid break minutes you specify, and displays the result in both human-readable format (hours and minutes) and decimal form (for calculations). If your end time is earlier than your start time, the tool automatically assumes you worked past midnight and adds 24 hours to the calculation.
Hours Worked = (End Time − Start Time − Break Minutes) ÷ 60The total elapsed time between start and end (in minutes) is calculated first. The unpaid break duration is subtracted from this total. The remaining minutes are divided by 60 to convert to decimal hours, or displayed as hours and remaining minutes (H:MM format).
| Input | Result | Notes |
|---|---|---|
| Start: 09:00, End: 17:30, Break: 30 minutes | 8:00 (8.00 hours) | Standard 8.5-hour day minus 30-minute lunch = 8 hours worked. |
| Start: 22:00, End: 06:00 (overnight), Break: 45 minutes | 7:15 (7.25 hours) | Overnight shift: 22:00 to 06:00 is 8 hours; minus 45-minute break = 7 hours 15 minutes. |
| Start: 08:00, End: 16:30, Break: 0 minutes | 8:30 (8.50 hours) | No break taken; full 8.5 hours counted as worked. |
H:MM (8:45) is easier to read and matches how we speak about time. Decimal (8.75) is needed for payroll systems and quick maths. Both are standard; choose whichever suits your timesheet system.
Yes. If your end time is earlier than your start time (e.g. 22:00 to 06:00), the tool automatically assumes you worked past midnight and calculates the correct duration.
Add all your unpaid breaks together and enter the total in the break field. For example, if you take two 15-minute breaks and a 30-minute lunch, enter 60 minutes total.
Multiply the decimal hours by your hourly rate. For example, 8.75 hours at £15/hour = £131.25. Many timesheet systems accept decimal hours directly.
No. This tool runs entirely in your browser. Your times are never sent to a server, stored, or logged.
Yes. Enter your project start and end times, deduct any off-task breaks, and you'll see billable hours. Works for consulting, freelance, or internal project tracking.