Time Duration Calculator – Calculate Time Between Two Times
Find the duration between any two times or dates. This free time calculator shows hours, minutes, and seconds between start and end times for scheduling, payroll, or project tracking.
Time Range
Duration
Enter start and end times to calculate duration
How to Calculate Time Duration
Enter Start Time
Set when the activity or event begins.
Enter End Time
Set when the activity or event ends.
Get Duration
Calculator shows exact time between start and end.
Features
✓Time Only or Full Dates
Calculate within one day or across multiple days with dates.
✓Overnight Support
Automatically handles times that cross midnight.
✓Multiple Formats
Shows duration in hours, total minutes, and total seconds.
✓Instant Results
Updates automatically as you change times.
Frequently Asked Questions
How do I calculate time duration?
Subtract start time from end time. For example, 5:00 PM - 9:00 AM = 8 hours. This calculator handles the math automatically.
Can I calculate overnight duration?
Yes, if end time is before start time (like 10 PM to 6 AM), the calculator assumes next day and shows 8 hours.
How do I calculate hours worked?
Enter clock-in time as start and clock-out as end. Subtract any unpaid break time from the result for actual hours worked.
Can I calculate multi-day events?
Yes, use the date fields for both start and end. The calculator shows total days, hours, and minutes between dates.
What format should I use?
Use 24-hour or 12-hour time format. The calculator accepts standard time inputs. Dates use YYYY-MM-DD format.