Dry layout
Find the midpoint of each wall and snap a chalk lines on the floor.
The line crossing at the room’s center are the starting point of the tile.
Lay a row of tiles along a straightedge more than halfway across the room.
Do you tile a kitchen floor before installing cabinets?
No Tile Industry Standards Detail When to Install Cabinets
The reason that the answer is “it depends” is that there are no tile industry standards detailing when cabinets are to be installed.