Formula To Calculate Time In Excel

Introduction: Time calculations are essential in various applications. This article provides a simple HTML and JavaScript calculator to calculate the time difference between two given times.

Formula: The formula used is straightforward: subtract the start time from the end time and extract hours and minutes from the result.

How to Use:

  1. Enter the start time in the “Start Time” field.
  2. Enter the end time in the “End Time” field.
  3. Click the “Calculate” button.
  4. The result will be displayed below the button.


  • Start Time: 09:30 AM
  • End Time: 03:45 PM
  • Result: 6 hours and 15 minutes


  1. How does the calculator work?
    • The calculator subtracts the start time from the end time to calculate the duration.
  2. Can I input times in 24-hour format?
    • Yes, the calculator supports both 12-hour and 24-hour time formats.
  3. Is the calculator suitable for date calculations too?
    • No, this calculator focuses on time differences within a day.
  4. Can I use it for negative time differences?
    • Yes, negative differences are possible when the end time is earlier than the start time.
  5. Does the calculator consider daylight saving time changes?
    • No, it assumes a constant time zone without daylight saving changes.

Conclusion: This simple time calculator provides a quick way to find the duration between two time points. It’s user-friendly and can be easily incorporated into various projects for time-related calculations.

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