**Introduction:** The Hours Since Calculator is a handy tool for calculating the time duration in hours between two given points in time. Whether you’re tracking work hours, events, or any other time-related activity, this calculator provides a quick and easy way to determine the elapsed hours.

**Formula:** To calculate the time difference in hours, subtract the start time from the end time and divide the result by the number of milliseconds in an hour.

**How to Use:**

- Input the start time in the “Start Time” field.
- Input the end time in the “End Time” field.
- Click the “Calculate” button to obtain the elapsed hours.

**Example:** For example, if you input a start time of 09:00 AM and an end time of 02:30 PM, the calculator will show that the elapsed time is 5.5 hours.

**FAQs:**

**Q: Can I input times in different formats, like 24-hour or AM/PM?**A: Yes, the calculator accepts both 24-hour and AM/PM formats.**Q: What happens if I enter the end time as earlier than the start time?**A: The calculator will still provide a result, but the value will be negative, indicating a backward time duration.**Q: Can I input fractional hours, like 3.5 hours?**A: Yes, the calculator supports fractional hours.**Q: Is there a limit to the range of times I can input?**A: No, you can input any reasonable values for start and end times.**Q: How accurate is the calculator in accounting for daylight saving time changes?**A: The calculator doesn’t account for daylight saving time changes, so please adjust for any time zone or daylight saving differences manually.

**Conclusion:** The Hours Since Calculator streamlines the process of determining elapsed hours, providing a straightforward solution for time duration calculations. Whether you’re managing work hours, planning events, or analyzing time-related data, this calculator is a valuable tool for obtaining precise results. Use it to enhance your time tracking and make accurate calculations effortlessly.