How the tile layout studio works
The drawing models a rectangular room and repeats tiles using the nominal tile dimensions plus the grout-joint gap you enter. A centered layout aligns the tile grid around the room center; corner mode starts at a corner. In a half-offset running bond, alternate rows shift by half a tile module. Tiles that cross the room boundary are clipped and highlighted as cut placements.
Cut placements are not the same as the number of additional whole tiles you must purchase. An installer might reuse offcuts, and the outcome depends on tile direction, usable leftovers, narrow cuts and the actual room geometry. This studio does not simulate physical cutting or optimize offcut reuse.
How many tiles should I buy?
For a first budget estimate, divide the room area by the face area of a tile and then add your waste allowance. Our estimate rounds up to whole tiles. For box purchases, divide the room area plus the allowance by the manufacturer’s printed coverage per box and round up. The preview placement counts are provided separately so you can spot cutting-heavy patterns.
Straight versus running-bond layouts
A straight layout aligns vertical and horizontal grout joints, usually creating a calm, orderly appearance. A half-offset running bond shifts every other row, producing a brick-like look that often increases the number of edge cuts. The best choice can depend on the tile manufacturer’s offset recommendations, especially for large rectangular tiles with allowable warpage.
Example: a 15 × 10 ft room
A room that measures 15 by 10 feet covers 150 square feet. With 12 × 24 inch tiles, each tile face covers 2 square feet, so the face-area minimum is 75 tiles. A 15% planning allowance produces 87 whole tiles. With boxes labeled for 12 square feet of coverage, a 15% allowance requires 15 boxes (172.5 ÷ 12 = 14.375, rounded up). Actual cuts, usable scraps and any pattern-specific requirements can change the final order.
What this studio does not model
- Non-rectangular rooms, alcoves, doors, columns, stairs or diagonal patterns.
- Actual manufactured tile size (which may differ from its nominal labeled size), spacers and product tolerances.
- Substrate prep, leveling, waterproofing, expansion joints, movement joints or installation constraints.
- Whether a cut off one tile can be reused elsewhere, tile carton piece counts or defects.
Measure the project onsite, dry-lay a sample area and compare your plan with the installation instructions before purchasing. This free planning tool does not provide engineering or professional installation advice.
Related tools and references
Use the Tile Calculator for quick material estimates, the Grout Calculator for joint requirements, and the Project Board to compile materials. For product-specific grout consumption, check the supplier’s published coverage table rather than treating generic density estimates as definitive.