Date & Time

Time Duration

Calculate hours and minutes between two times of day.

Time Unit Reference

1 minute60 seconds
1 hour60 minutes
1 hour3,600 seconds
1 day24 hours
1 day1,440 minutes
1 day86,400 seconds
1 week168 hours
1 year8,760 hours

Common Durations

Typical work shift8 hours
School day6–7 hours
Full work week40 hours
Flight: NY → LA~5.5 hours
Flight: NY → London~7 hours
Marathon avg~4–5 hours
Movie average~2 hours
Sleep recommended7–9 hours

Time Zones Note

This calculator works with times on the same clock — no timezone conversions. For spans across midnight, check the "Spans overnight" box. For cross-timezone duration, add or subtract the UTC offset difference first.

UTC−5 (EST) → UTC−8 (PST)add 3h
UTC+1 (CET) → UTC+5:30 (IST)subtract 4.5h