The rule in one sentence
As a short-stay visitor, you may spend at most 90 days in any 180-day period in the Schengen area as a whole — not per country.
How the counting works
On any given day, look back 180 days. Count every day you were in the Schengen area in that window, including the days you arrived and left. That total must stay at 90 or below.
Example 1: one long trip
You arrive on 1 March and stay until 29 May. That is 90 days. You then need to be outside the Schengen area long enough for those days to “roll off” the 180-day window before you can return for long.
Example 2: several short trips
Three trips of 30 days each within six months add up to 90 days. A fourth trip in that window would be an overstay, even if each trip felt short.
Example 3: the UK or Ireland in between
Days in the UK, Ireland or other non-Schengen countries do not count. A week in London between Paris and Rome pauses your count.
Why this matters more now
Before EES, officers counted stamps by hand, and mistakes went both ways. EES records every entry and exit digitally and flags overstays automatically. An overstay can lead to fines or entry bans, so plan with a margin.
Check your own dates with our Schengen 90/180 calculator, and compare with the European Commission’s official short-stay calculator before longer or repeat trips.