Enter every entry and exit. The counter adds up your days in the last 180, shows how many are left and the first day you can go back.
Planning tool only. The result is an estimate from the dates you enter. It is not legal advice and it does not decide anything at the border. Always check the official entry rules for your passport and your trip before you travel — for example the European Commission page on Schengen border crossing and the 90/180 rule.