Free Time Duration Calculator Online – Calculate Hours and Minutes

Time Duration Calculator

Calculate the elapsed hours and minutes between two times.

Start Time End Time End time is on the next day

Enter a start time and end time to see the result.

Use our free Time Duration Calculator to find the time between a start time and an end time. Enter both times to calculate the total hours and minutes. This tool is useful for tracking work hours, planning activities, measuring task durations, and calculating elapsed time across midnight.

What Is a Time Duration Calculator?

A Time Duration Calculator determines how much time passes between two clock times. It displays the duration in hours and minutes, helping you calculate time intervals without doing the math manually.

How to Use the Time Duration Calculator

Enter the start time.
Enter the end time.
If the end time is on the following day, enable the next-day option.
Click Calculate Duration.
Review the total hours and minutes.

Time Duration Examples

Example 1: A Short Time Interval

From 9:00 AM to 11:30 AM is 2 hours and 30 minutes.

Example 2: A Work Session

From 8:15 AM to 4:45 PM is 8 hours and 30 minutes before subtracting any breaks.

Example 3: Overnight Duration

From 10:00 PM to 2:00 AM the next day is 4 hours.

Features

Calculates elapsed hours and minutes
Supports time intervals crossing midnight
Simple start and end time inputs
Useful for work sessions, study periods, and daily planning
Works in modern desktop and mobile browsers

Frequently Asked Questions

How do I calculate hours between two times?

Enter the start and end times and select Calculate Duration. The tool displays the elapsed hours and minutes.

Can I calculate time across midnight?

Yes. Enable the next-day option when the end time occurs on the following calendar day.

Does the calculator subtract lunch breaks?

No. The basic calculation shows the full elapsed duration. Subtract any unpaid breaks separately if you need working hours.

Is this calculator free?

Yes. This online tool is intended for free use.

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Disclaimer

This calculator is intended for general time calculations and planning. For payroll, attendance, or official records, verify the result against the applicable workplace rules and policies.