18x18 Tile Calculator
Work out how many 18×18 inch tiles you need, with grout and waste included.
Tile math runs on your device — nothing is uploaded or storedTry: Room area=100, Area unit=sqft, Tile width=18, Tile height=18, Grout width=0.125, Waste=10, Tiles per box=10, Adhesive (lb/ft²)=0, Bag covers (ft²)=50 → 100.00 ft², 18 × 18 in, 44, 10%, 49, 5 (10/box), 5 lb
How to use
Eighteen-inch tiles cover 2.25 ft² each. Enter your area; the calculator expands each tile by the grout width and applies your waste margin.
FAQ
How many 18×18 tiles per square foot?
Just under 4.5 cover a square foot before grout; the calculator accounts for the grout lines automatically.