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Online time duration calculator
Time Duration Calculator
Find hours and minutes between two times or dates. Use 12-hour or 24-hour (military) time, deduct lunch and breaks, or add several intervals for split shifts.
Time duration calculator hours
Calculate duration in hours, minutes & seconds
Measure on-the-clock time with lunch and unpaid breaks. Switch to 24h / military if your schedule uses that format.
Time duration calculator hours and minutes
Find how long it is between two clock times on the same day—or overnight. Add lunch and extra breaks for daily shifts.
Time duration calculator between two dates
Span between two dates and times. See days, hours, minutes, seconds, calendar Y/M/D, and weekday counts.
Work time duration calculator
For shifts: gross on-the-clock time, unpaid lunch and breaks, regular vs overtime, and an optional pay estimate.
Multiple time duration calculator
Add several start/end blocks and sum them—meetings, split shifts, or task timers—then deduct shared lunch or breaks once.
Duration from now or until a target
Countdown until a future moment, or measure elapsed time since a past clock time—live wall-clock duration.
Convert a duration to other units
Enter days, hours, minutes, and seconds to see decimal hours, total minutes, weeks, and HH:MM:SS.
How to use this online time duration calculator
Pick a mode, enter start and end times (or dates), optionally deduct lunch and breaks, then read hours, minutes, seconds, and decimal hours. Use 24h / military if that is how you write times, or keep 12-hour AM/PM.
- Choose Between times for same-day or overnight spans.
- Use Between dates when the span crosses calendar days.
- Open Work + lunch for shift hours with overtime.
- Use Multiple to total several intervals at once.
Why people use a time duration calculator
People use this for payroll, billed hours, study blocks, and travel gaps. A clear hours-and-minutes result is easier than doing the wrap-around math by hand, especially when a shift goes past midnight.
24 hour and military time duration calculator
Military and ops schedules often use 24-hour time. Choose 24h / military so 17:45 is clear—no AM/PM mix-ups. The same math works for night duty.
Time duration calculator with lunch and breaks
Unpaid meals and rest should not inflate paid hours. This tool subtracts those minutes from gross time so you see paid duration. For a full weekly card, open the time card calculator.
Multiple time duration calculator for split days
When work is split (morning and evening), add each interval, then deduct shared lunch or breaks once. Copy the result for chat, email, or notes.
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Time duration calculator FAQ
What can this time duration calculator online do?
It finds duration between two times or dates. It supports 12h and 24h, lunch and breaks, multiple intervals, unit convert, and decimal hours.
How do I use a 24 hour time duration calculator?
Click 24h / military, enter start and end in 24-hour form (for example 08:00 and 17:30), then calculate. Overnight shifts work when end is earlier than start or Overnight is checked.
How does the work time duration calculator handle lunch?
Enter shift start and end, set lunch minutes (and other unpaid breaks), then calculate. Paid time equals on-the-clock time minus those deductions; overtime splits against your threshold.
What is an on the clock time duration calculator?
"On the clock" means gross elapsed time from clock-in to clock-out before unpaid lunch or breaks. This tool shows both gross and net paid duration.
Can I calculate multiple time durations at once?
Yes—open the Multiple tab, add rows for each start/end block, then sum. Optional shared lunch and breaks deduct from the combined total.
For live city times while you convert, open the world clock live.
Quick Eastern to Central math starts at the est to cst.