Time & Date
Hours Calculator
Use this hours calculator for timesheets, shifts, study sessions, and elapsed clock-time problems.
Use 24-hour HH:MM time.
Use 24-hour HH:MM time.
Net hours
—
- Gross hours
- —
- Net minutes
- —
Student quick launch
Grade planning, algebra checks, and formulas students reach for most.
Study path
Use this calculator with
Follow these when you want the formula behind the answer, a short lesson, or nearby tools in the same topic.
What the hours calculator solves
Use this hours calculator for timesheets, shifts, study sessions, and elapsed clock-time problems.
Formula
How to use it
- Enter start and end time in 24-hour format.
- Add break minutes.
- Read net hours and minutes.
How to read the answer
Net hours are the payable or counted hours after subtracting breaks.
Common mistakes and edge cases
- Use 24-hour time to avoid AM/PM ambiguity.
- Overnight shifts roll past midnight.
- Breaks longer than the shift are invalid.
Worked examples
Work shift
Net hours
8
Overnight shift
Net hours
7.25
Frequently asked questions
Can this handle overnight shifts?+
Yes. If end time is earlier than start time, it assumes the end is on the next day.
Why use decimal hours?+
Decimal hours are useful for payroll and billing, while minutes are useful for schedules.
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Last updated: May 8, 2026