Inputs
Typical: 10% straight lay, 15% complex cuts / patterns.
Grout joints are not included in the tile area calculation (conservative). Always round up to full boxes and keep spares.
Results
Enter your wall and tile details then click Calculate.
UKUK Building Regulations
References & Sources
Standards Cited
- BS EN 14411 — Ceramic tiles — Definitions, classification, characteristics, assessment and verification of constancy of performance and marking
Defines standard ceramic tile sizes and dimensional tolerances - BS 5385-1 — Wall and floor tiling — Part 1: Design and installation of internal ceramic, natural stone and mosaic wall tiling in normal conditions
Provides guidance on wall tile installation, wastage allowances, and layout planning
Formulas Used
- Wall Area:
A = wallWidth x wallHeight
Source: Standard geometry - Tile Area:
tileArea = (tileWidth / 1000) x (tileHeight / 1000)
Source: BS 5385-1 — Tile dimensions converted from mm to m - Tiles Needed:
tiles = ceil(wallArea / tileArea)
Source: BS 5385-1 installation guidance - Tiles with Wastage:
total = ceil(tilesNeeded x (1 + wastage% / 100))
Source: BS 5385-1 — Typical wastage 10-15% for cuts and breakages
Key Assumptions
- Wastage of 10-15% recommended for cuts, breakages, and future spares — BS 5385-1
- Grout joint width not included in tile area calculation (conservative estimate) — Industry standard practice