The Schengen 90/180-day rule can be confusing because it is not based on a fixed calendar period. The calculator uses a rolling 180-day window to help users understand how many days may already be used and how planned trips could affect a travel plan.
What is the rolling 180-day window?
The 180-day period does not start once from the first entry and it does not reset automatically after the last exit. For every day being checked, the calculator looks back 180 days including that day.
Are entry and exit dates counted?
Yes. For planning purposes, both the entry date and the exit date are counted as stay days. A trip from May 4 to May 21 is counted as 18 days, not 17 nights.
What date is used for the calculation?
The calculator uses a practical calculation date to show your current 180-day window. If previous trips are saved, it uses your latest saved exit date. If no previous trips are saved, it uses today. This is why the calculator card may show either “Latest saved exit date” or “Today”.
How are planned trips checked?
Planned trips are checked day by day. For each planned travel day, the calculator looks back 180 days and counts how many Schengen stay days fall inside that window.
What does 90-day start estimate mean?
The 90-day start estimate is an educational estimate of the first date from which a new full 90-day stay may begin in this planner. A shorter trip may be possible earlier.
Why this is only an estimate
The calculator is based on the dates entered by the user and a general 90/180-day calculation method. It does not verify nationality, visa type, residence status, exemptions, bilateral arrangements, or individual legal circumstances.
Official sources
This website is independent and educational. For official information about the Schengen short-stay rule, compare your position with the European Commission guidance and tools.