Measure the room you want to install carpet tiles in.
Buy carpet tiles at a local home improvement store, carpet store or carpet dealer. Be sure to ask for discount tiles if you're on a tight budget. Carpet sales staff often receive commission for each sale, so don't be afraid to negotiate pricing. You will not need carpet padding, so don't buy it.
Remove everything from the room before you install carpet tiles. If you cannot move the furniture out of the room, move everything to one side, lay carpet tiles on the other side, then put the furniture back in place.
Use a pry bar to remove tack strips and/or molding from the floor.
Clean the floor and make sure it's flat, dry and dust free before you begin carpet tile installation.
Start laying floor carpet tiles in one corner of the room, then work your way across.
Make sure each carpet tile edge fits tightly against the other. Once the interlocking floor tiles are in place, brush your hand across the seams to blend them together.
Use a carpet knife to cut the tiles and fit them into corners and edges in the room. Measure, mark and cut on back of the carpet tiles to help fit them correctly around fireplaces and heating vents.
Vacuum the carpet tiles.
Put the furniture back in place on top of the carpet tile.
Enjoy your new floor covering!