About this site

The Schengen 90/180 Calculator is a small, free tool that turns the often-confusing “90 days in any 180-day period” rule into concrete numbers. You enter your trips, and it tells you how many days you have used in the rolling 180-day window, how many remain, and your latest safe exit date.

It was built because the rule is genuinely easy to get wrong: the window slides rather than resets, and both entry and exit days count. A purpose-built calculator removes the arithmetic and the guesswork, while keeping your travel data private — every calculation runs locally in your browser and nothing is uploaded or stored.

Who makes it

This site is built and maintained by Marcio, an independent maker of small, single-purpose web tools. The aim is straightforward, honest utilities that do one job well, with clear explanations and no sign-up.

A note on accuracy

This calculator is an unofficial aid. It follows the standard rolling-window method and counts entry and exit days as the official rules do, but immigration decisions rest with border authorities. For any binding decision, please also check the European Commission’s official short-stay calculator and the rules of the specific country you are visiting. If you spot an error or have a suggestion, I would genuinely like to hear it — see the contact page.