Find out how many tiles, boxes of tile, and how much grout you need for a floor, wall, or backsplash.
0tiles
| Item | Amount |
|---|---|
| Area | |
| Area with extra | |
| Boxes of tile | |
| Grout (approx.) |
The calculator finds your floor or wall area, adds extra for cuts, and divides by the space one tile takes up, including its grout joint.
Tiles = area × (1 + waste) ÷ area of one tile plus joint
Boxes are found by dividing the area, with waste included, by the coverage printed on the box, then rounding up.
The calculator finds the volume of the joints (joint width × tile thickness × length of joints) and converts it to weight, assuming grout weighs about 100 lb per cubic foot, then adds 20 percent for waste. Different grouts vary, so treat this as a rough guide and check the grout manufacturer's coverage chart.
This assumes one rectangular area. For L-shaped rooms, split the room into rectangles and add the results. Subtract large openings, like a tub, if the tile will not go under it.
A 120 square foot floor with 12 x 12 inch tiles, a 1/8 inch joint, and 10 percent extra needs about 130 tiles.
Ten percent for simple layouts and 15 percent or more for diagonals or lots of cuts. Extra tiles also give you spares for future repairs, since a later batch may not match in color.
Slightly. Wider joints mean each tile covers a bit more space, so you need a few fewer tiles, but more grout. Most floor tile uses a 1/8 to 3/16 inch joint.
Divide your area, with extra added, by the square feet per box listed on the packaging, then round up. Enter that number in the box field above to do it automatically.
Yes. Enter the wall's length and height as the area's length and width.