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  1. Home
  2. /Tools
  3. /Time Duration Calculator
⏳Online Tool

Time Duration Calculator

Calculate the exact time between two moments.

Duration Between Two Times

8h 0m 0s
480Total Minutes
28800Total Seconds
8.00Decimal Hours

Add/Subtract Time

12:00:00

How to Calculate Time Duration

Calculating the exact duration between two times is essential for timesheets, project management, billing, and workout tracking. Our time duration calculator computes the precise hours, minutes, and seconds between any two time points, even across different dates.

The tool also includes an add/subtract feature β€” enter a starting time and add or subtract hours and minutes to find the resulting time. Perfect for calculating arrival times, shift schedules, or cooking durations. For date-level calculations, use our Date Calculator.

Frequently Asked Questions

Can it calculate across midnight?

Yes, when you include dates, the calculator accurately handles time spans that cross midnight or multiple days.

What about time zones?

The calculator works with local times. For cross-timezone calculations, use our Timezone Converter first.

Can I add hours to a time?

Yes, use the Add/Subtract Time section to add or subtract any number of hours and minutes from a starting time.

⏱️StopwatchπŸ“…Date CalculatorπŸ’ΌWorking DaysπŸ’°Salary Calculator
⏱️

Time Difference

Calculate hours, minutes, and seconds between two times.

πŸ“Š

Multiple Formats

Results in hours, minutes, decimal hours, and more.

πŸ“‹

Timesheet Ready

Perfect for calculating work hours and overtime.

Calculate the exact duration between two times in hours, minutes, and seconds. Our free time duration calculator is perfect for timesheets, work hour tracking, overtime calculation, and scheduling.

Frequently Asked Questions

How do I calculate hours between two times?β–Ό

Enter your start time and end time. The calculator instantly shows the duration in hours, minutes, and seconds.

Can it calculate overnight durations?β–Ό

Yes! If your end time is earlier than your start time, the calculator assumes it crosses midnight and calculates accordingly.

Is this useful for timesheets?β–Ό

Absolutely! Use it to calculate daily work hours, overtime, break durations, or total hours for payroll.

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Last updated: February 12, 2026