Room width
ft
Room length
ft
Tile size
6" × 6" — 50 per box
12" × 12" — 15 per box
18" × 18" — 8 per box
24" × 24" — 4 per box
Area
192.00 sq ft
Tiles
189
Boxes
13
Straight lay, 1/8 in joints, full boxes only, no waste allowance.
Full calculator — rectangular tile, patterns, waste, thinset and grout