The Schengen 90/180 Day Calculator helps count short-stay days against the rolling rule that generally permits up to 90 days in any 180-day period for eligible travelers.
Counting method
Enter travel dates and review the number of days used, remaining allowance, and the rolling-window result shown by the component. Entry and exit dates may both count as days under Schengen rules, so compare the output with official guidance.
Questions
Is the 180-day period a fixed calendar half-year?
No. It is a moving window evaluated for each day of stay.
Do all nationalities use this rule?
No. Visa status, residence permits, bilateral agreements, and nationality can affect the applicable rule.
Is this an official visa decision?
No. It is a planning aid. Border authorities and official consular guidance control the final interpretation.
Limitations
Verify dates, entry and exit counting, visa type, and current rules with the official European Commission or consular source before travel.