01
Trip days include the departure date
If departure and return are the same date, the trip is 0 nights and 1 day. The return date is the day you come back, not the last night.
Travel date calculator
Calculate trip length or return date in one place.
Date inputs
How travel date counting works
02
Date math avoids DST shifts
The calculator uses UTC date serials so 23-hour or 25-hour local days do not move the result by one day.
03
You can also calculate the return date
When you know the departure date and the number of nights or days, the tool calculates the return date for checking flights and lodging.
04
Compare lodging dates
Verify actual check-in and checkout separately.
05
Use local dates
For date-line crossings, enter local itinerary dates.
Frequently asked questions
How is a same-day trip shown?
Same departure and return date is shown as 0 nights and 1 day.
How do nights and trip days relate?
Trip days are usually one more than nights: for example, 3 nights and 4 days.
What if the return date is before departure?
The tool treats it as invalid input and shows a message instead of a result.
What about the date line?
Enter the local dates printed on the itinerary.