Apply at the consulate of the country you'll enter first. This is the official Schengen tiebreaker rule. Our calculator handles this automatically when you set your first country of entry.
Transit doesn't count toward your nights calculation. Only include countries where you're actually staying overnight. If you're just passing through an airport or driving through, don't add it to your itinerary.
No. You must apply at the consulate of the country where you spend the most nights. If two countries tie, apply at the country of first entry. Applying at the wrong consulate is grounds for rejection.
Add all countries and their respective nights. The tool handles any number of countries. It will correctly identify which consulate you should apply at, even for complex itineraries spanning many destinations.