The free Schengen 90/180 calculator that stops overstays before they happen
Every year thousands of non-EU travellers breach the Schengen 90/180 rule by accident. Not because they were careless with their itinerary, but because the maths is genuinely awkward: the window rolls, entry and exit days both count, and a single forgotten weekend in Amsterdam can push a planned trip over the line.
That is why we built the TRAVELYTES™ Schengen 90/180 Calculator — free, private to your account, and open at /tools/schengen-calculator.
What the tool actually does
- Logs every trip with entry and exit dates, country and purpose of travel (business, leisure, work, transit).
- Tracks the rolling 180-day window from any check date you choose — today, or a future entry date.
- Traffic-light status: SAFE, CAUTION or DO NOT ENTER, so you know the answer before you read the detail.
- Next safe entry date: the exact day you can re-enter and how many days that entry unlocks.
- Overlap protection: flags conflicting trip dates so days are never double-counted.
- Planned outlook: model a future trip separately from days already taken, so you can test an itinerary without corrupting your history.
Why the rolling window catches people out
The rule is simple to state: 90 days in any rolling 180-day period across the 29 Schengen states. It is hard to apply because the window moves with you. Leaving Schengen does not reset anything — it only means older days eventually fall out of the back of the window.
The four-step method is covered in detail in how to calculate Schengen days without getting banned. The calculator simply does those four steps every time your data changes.
Who uses it, and how
Frequent flyers and remote workers. Log each trip as you take it. Check the status before booking anything, not after.
Corporate travel and mobility managers. Multi-leg European itineraries are where allowances get burned quietly. Model the trip in the planned outlook tab before the booking is approved — see also the multi-leg business trip survival guide.
Cabin crew, tour leaders and cruise staff. Repeat short entries add up faster than long holidays. Purpose-of-travel tagging keeps a clean record if a border officer asks.
Retail and travel-retail teams briefing customers in store: it is a genuinely useful thing to point a traveller at, and it costs them nothing.
Deployed and contracted personnel moving through European hubs need an auditable day count rather than a memory of stamps.
What it does not do
It is not immigration advice and it does not replace the legal record. From the rollout of the EU Entry/Exit System (EES), your entries and exits are recorded biometrically, and that record is what a border officer works from. The calculator exists so your own count matches theirs before you arrive.
Pair it with the passport validity check
A valid day count is worthless if your passport fails the three-month validity requirement. Run both: the passport validity checker takes about twenty seconds.
While you are planning the trip
Long-haul cabins run at very low humidity, and back-to-back European legs compound the fluid loss. TRAVELYTES™ FLIGHT is built for exactly that pattern — see how to avoid travel dehydration for the evidence, and the hydration packing checklist for what to actually put in the bag.
Open the calculator: /tools/schengen-calculator.
Further reading from Simon Calder (The Independent)
Coming soon: TRAVELYTES™ HOLIDAY (One Too Many) — hot-climate and morning-after hydration in one travel formula. Sign up to be notified when it launches →