Hours Calculator

Calculate the duration between two times or add/subtract time.

Calculate Duration Between Two Times

(If end time is on the next day, calculation might need adjustment)

Enter start and end times.

Calculating Time Durations

Calculating the exact amount of time that has passed between a start time and an end time is essential for tracking work hours, logging activities, managing projects, or simply figuring out how long an event lasted. This calculator simplifies finding the duration in hours, minutes, and seconds.

How to Use

  1. Enter the Start Time using the time picker (select hour and minute, AM/PM if applicable).
  2. Enter the End Time using the time picker.
  3. Click "Calculate Duration".

The result will show the total duration between the two times, typically displayed as Hours:Minutes:Seconds and potentially as total decimal hours or total minutes.

Considerations

  • Crossing Midnight: Basic duration calculations within the same day are straightforward. If the end time is on the *next* day (e.g., starting at 10:00 PM and ending at 6:00 AM), the simple difference will be incorrect. Advanced calculators often include a checkbox or option to indicate if the period crosses midnight. This version assumes times are within the same 24-hour period unless explicitly handled in the JS.
  • AM/PM:** Be mindful of AM/PM settings if using a 12-hour clock format.
  • Seconds:** Standard HTML time inputs often don't include seconds easily. If second-level precision is needed, separate inputs might be required.

Applications

Tracking employee timesheets, calculating billable project hours, timing workouts or activities, scheduling events, and analyzing time logs.