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Time Duration Calculator

Calculate the hours and minutes between two times

Need to calculate total hours worked or the duration of an event? This calculator finds the exact difference between a start time and an end time.

Calculator Inputs

Results

Enter values above to see your results

How It Works

Simply enter the two times. If the end time is earlier than the start time, the calculator assumes the time period spans overnight to the next day.

Tips & Best Practices

  • Use 24-hour format (e.g., 13:00 for 1:00 PM) for less ambiguity, though AM/PM works if supported by your browser.
  • Great for calculating timesheets or flight durations.

Frequently Asked Questions

Does this handle overnight shifts?

Yes. If your start time is 10:00 PM and end time is 6:00 AM, the calculator understands this crosses midnight and calculates 8 hours.