Time Difference Calculator

Put both times into the 24-hour boxes. The tool converts each to minutes past midnight, subtracts the start from the end, and shows the gap as hours and minutes plus a running minute total.

It rescues overnight spans. With it ticked, an end time earlier than the start, such as 22:00 to 06:00, is read as the next day by adding 24 hours, which returns 8h 0m instead of an error.

That span is genuinely ambiguous, so rather than guess, the tool shows a message asking you to enable cross midnight for an overnight span. Nothing is silently assumed.

The 24-hour clock removes any AM or PM confusion around noon and midnight. Hours run 0 to 23 and minutes 0 to 59, so 1pm is 13 and midnight is 0. Values outside those ranges are rejected.

Yes. Under the hours-and-minutes headline the tool prints the whole span in minutes, for example 510 minutes, which drops straight into payroll or billing math.

No. This calculator works to whole-minute precision only. If you need second-level timing, use a stopwatch or a tool that accepts seconds as a separate field.

No. It compares two clock times within a single 24-hour window, so the maximum result is just under 24 hours. For multi-day gaps between calendar dates, use a date duration calculator instead.

No. The tool subtracts pure clock values and knows nothing about time zones or DST transitions. On a night the clocks shift, the real elapsed time can differ by an hour from what the clock faces suggest.

No. The whole calculation runs in your browser with no network request, so the times you enter never leave your device.