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Meeting Duration Calculator

Calculate meeting duration and total meeting hours from start and end times.

Live editable inputs

Change the values and see the calculation update immediately.

Formula and working

The relationship behind the answer stays visible on the page.

Assumptions visible

Rates, dimensions and limitations are kept explicit instead of hidden.

Connected next steps

Move into the next genuinely different calculation without keyword-copy pages.

Inputs

Results

8h 0m
480 total minutes
8 decimal hours
Start and end are on the same day
Show the working
  1. 1. Elapsed = 1020 − 540 = 480 minutes.

This owner compares local clock times only; it does not know dates or time zones. Use the date/time or time-zone calculator when those affect elapsed duration.

Equal start and end times mean zero duration in this calculator, not a 24-hour meeting.

More actions

Shared links reopen these inputs. Recent and saved calculations stay in this browser unless you clear site data.

How to use this calculator

Find elapsed time between two local clock times, including overnight meetings when the end clock is earlier than the start. The result includes hours/minutes, total minutes and decimal hours with the rollover rule shown explicitly.

Step-by-step

  1. Step 1

    Enter the local start clock.

  2. Step 2

    Enter the local end clock.

  3. Step 3

    Review elapsed hours/minutes, total minutes and whether the end was treated as the following day.

How the result is calculated

Elapsed minutes = end clock − start clock; if end < start, add 24 hours.

Where this calculator is useful

Meeting and appointment duration checks

Use the result as a check within this type of task, with the assumptions shown above.

Simple overnight activity timing

Use the result as a check within this type of task, with the assumptions shown above.

Converting a clock interval to decimal hours

Use the result as a check within this type of task, with the assumptions shown above.

Common questions

What if the end time is earlier than the start?

The calculator treats the end as occurring on the following day and adds the time remaining to midnight.

What if start and end are identical?

This owner returns zero duration, not 24 hours.

Does this account for dates or time zones?

No. It compares local clock times only. Use the date/time or time-zone calculators when dates, DST or zones affect elapsed time.

Need a different calculation?

Use the calculator library to switch tasks when the question, unit or assumption changes.

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