Date calculators · Travel & booking
Trip Nights Calculator
Count the nights, then check the gaps. Bring your stays together before you book the next stop.
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Choose your dates.
Select your counting rules and calculate.
Calculation details
| Step | Value |
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How to use this calculator
Add up to 30 stays with an optional place or booking name, check-in date and checkout date. Calculate the trip span, booked nights, unique covered nights and any gaps or overlaps. Download a CSV or an all-day itinerary calendar.
The check-in night counts; checkout does not. A checkout and another check-in on the same date fit together. Booked nights sum every reservation, while unique covered nights count each night once. Overlapping nights count each conflicted night once even if three bookings overlap. The overall trip can span up to 3,660 nights.
A worked example
A May 1–4 stay has three nights. A second stay May 5–8 has three more. Together they span seven nights with six covered nights and an unbooked night on May 4.
Will it account for overnight flights or crossing the date line?
No. Enter local itinerary dates for the accommodation you need. The tool compares date labels, not flight instants or check-in hours. A night without a hotel may be intentional, such as an overnight train; the gap helps you review it.
Which calendar and years are supported?
Use Gregorian dates from 1900 through 2100. Calculations run in your browser on request. Holidays must be entered for your own workplace. Calendar downloads contain all-day markers; trip checkout dates are excluded, while project markers span through each task's finish date. Unix conversion uses UTC-year bounds and your browser's time-zone database.
What happens to my dates?
Calculations run on your device. Saving a calculation is optional and keeps it in this browser. A setup link contains the dates and settings you entered; anyone with the link can read them. Use one tab per saved calculator. Clear saved data from Privacy & settings.