Date & Time Tools
Time Duration Calculator
Calculate dates, times and durations with Time Duration Calculator. Free, fast and mobile-friendly. No sign-up required, and calculations or text processing run locally in your browser whenever possible.
Calculate duration between two clock times, including overnight ranges.
Time duration
Start22:30
End06:15
Decimal7.75
Time duration7 hr 45 min
465 minutes between 22:30 and 06:15, allowing overnight ranges.
What is time duration calculator?
Find the duration between two times for shifts, appointments, travel legs and schedule blocks. Overnight ranges are supported.
How to use time duration calculator
- Enter the dates or times required by the Time Duration Calculator.
- Adjust options such as included days, business days or time zones where available.
- Read the instant result and copy the values you need.
When to use time duration calculator
- Calculate shift length
- Measure appointment duration
- Check overnight time spans
- Convert duration to decimal hours
FAQ
Can it calculate overnight duration?
Yes. Keep overnight duration enabled when the end time is on the next day.
Does it show decimal hours?
Yes. The summary includes decimal hours alongside hours and minutes.