Time Duration Calculator | Hours and Minutes Between Times
Calculate elapsed days, hours, and minutes between two dates or times for shifts, projects, travel, timesheets, and schedules.
Calculate Time Between Two Dates
Find the duration between a start date-time and an end date-time, including total days, hours, and minutes for work logs, events, travel, and planning.
Check Date Rollover and Time Zones
Durations can change when an end time passes midnight, daylight saving time applies, or teams work across regions. Verify time zones for official records.
Best Uses for Duration Calculations
Use it for shift length, meeting duration, project timing, study sessions, travel windows, service intervals, and quick time difference checks.
About This Tool
Time Duration Calculator adds and subtracts time values expressed in hours, minutes, and seconds. It is used to total running times, calculate elapsed time between events, or find the difference between two timestamps in a more readable format than a date calculator.
When to Use It
Use this when adding up video clip durations for a project, when totalling driving times across a road trip, or when calculating how long a sequence of tasks will take.
How to Use
- Enter each time value in hours, minutes, and seconds.
- Choose to add or subtract the values.
- Click Calculate to see the total duration.
- Convert the result to hours only or to days if needed.
Frequently Asked Questions
Can it calculate time differences that cross midnight?
Yes. If the end time is earlier than the start time, the calculator assumes the period crosses midnight and adds 24 hours.
Can I add more than two time values?
Yes. Add as many rows as needed. The total accumulates as you add each value.
Can I convert the total duration to decimal hours?
Yes. The result can be displayed as hours and minutes or as a decimal such as 2.5 hours for use in billing calculations.