How to use Time Duration
Find elapsed hours and minutes, including overnight.
- Choose the operation and enter every labeled input, keeping units and the time period consistent.
- Calculate, compare the worked example below and inspect any warnings.
- Change one assumption to compare another scenario; keep the model’s limits in view.
Formula & calculation method
Convert each clock time to minutes since midnight, subtract the start from the end, and add 1440 minutes when Next day is selected. Decimal hours = duration minutes ÷ 60.
Input reference · 3 fields
These labels describe the calculation’s base units. Supported measurements can switch through the header’s region settings; follow the current workspace labels. Prefilled values are examples.
- Start time
- Use a complete clock time.
- End time
- Use a complete clock time.
- End day
- Choose: Same day, Next day.
A quick example
22:30 to 01:15 the next day is 2 hours and 45 minutes.
Assumptions, edge cases & limits
- An earlier end time requires Next day for an overnight interval.
- There is no time zone, date or daylight-saving adjustment in this clock-only model.
- This is clock arithmetic without dates or daylight-saving adjustments.
Questions about Time Duration
How do I calculate an overnight shift such as 22:00 to 06:00?
Enter the start and end times and select Next day. The result is eight hours before any unpaid break deduction. Breaks are not subtracted automatically.
Can I use the result as payroll hours?
It can help with arithmetic, but payroll may apply breaks, rounding, overtime and local employment rules. Check those separately and consider daylight-saving changes when actual dates matter.
Are my files or inputs uploaded?
Calculation and file processing run in your browser without a processing upload. Downloads go to your device. Choosing a next-step transfer creates a temporary local copy for that workflow. Region preferences are stored separately from tool inputs. See our privacy details.
Can I use this tool for free?
Yes. No signup, subscription or payment is required to use the tool or download its output. File tools have device and size limits; a smaller batch may work better on a phone.
A result or explanation needs correcting? Tell us the tool name and an example.