Time Calculator
Calculate the difference between two times or add and subtract hours, minutes, and seconds from a time.
Frequently Asked Questions
How do I calculate time between two times?
Enter a start time and end time. The calculator will show the difference in hours, minutes, and seconds, plus the total in each unit.
Can I add or subtract time?
Yes. Switch to "Add / Subtract" mode to add or subtract hours, minutes, and seconds from any starting time.
Does it handle overnight time spans?
Yes. If the end time is earlier than the start time, the calculator assumes the end time is the next day.