**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:**

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

**Example:**

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

**FAQs:**

**How does the calculator work?**- The calculator subtracts the start time from the end time to calculate the duration.

**Can I input times in 24-hour format?**- Yes, the calculator supports both 12-hour and 24-hour time formats.

**Is the calculator suitable for date calculations too?**- No, this calculator focuses on time differences within a day.

**Can I use it for negative time differences?**- Yes, negative differences are possible when the end time is earlier than the start time.

**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.