Sixteenth
Tile & Flooring Calculator
Enter the room size. Add the box coverage for flooring or the tile size for tile, and you get how many to buy with waste.
Room sizes like 12' 6" or 3.8 m; plain numbers are feet. Leave the tile size empty for plank flooring.
How to estimate tile and flooring
area = length × width · with waste = area × (1 + waste)
tiles = with waste ÷ tile area · boxes = with waste ÷ box coverage
For an L-shaped room, split it into rectangles and add them up. Grout lines are small enough to ignore when counting. Buy all tile from the same lot so the color matches, and keep a few spares for repairs.
Questions
How much extra tile should I buy?
10% for a straight lay in a simple room, 15% for a diagonal or herringbone pattern or a room with many corners. Keep a few spare tiles for future repairs.
How many boxes of flooring do I need?
Room area × (1 + waste) ÷ the square feet per box printed on the carton, rounded up.
How many 12×24 tiles in 100 square feet?
A 12" × 24" tile covers 2 ft², so 100 ft² takes 50 tiles, or 55 with 10% waste.