Ceramic and porcelain tile
Floor Tile Calculator USA 2026
Tiles = room area ÷ single tile area (in² ÷ 144), plus 10% for straight layouts and 15% for diagonal or herringbone patterns.
Reviewed by BuildMate Editorial Team Construction Researchers Updated March 2026 2 min read Fact-checked
Tile Calculator — instant results
Results update as you type
Tile size1.00 sq ft each
Tiles required165
Coverage150 sq ft
Show calculation steps
- Tile area = (12 × 12) ÷ 144 = 1.000 sq ft
- Tiles (no waste) = 150 ÷ 1.000 = 150.0
- With 10% waste = 150.0 × 1.10 = 165.0
- Round up → 165 tiles
Get Materials or Professional Project Help
Turn your ceramic and porcelain tile estimate into a shopping list, or compare vetted local pros — both free.
Buy the materials
Affiliate links — BuildMate may earn a commission at no extra cost to you.
Hire a pro
Matched with up to 3 licensed local contractors. No obligation, no cost.
How the ceramic and porcelain tile math works
Tiles = room area ÷ single tile area (in² ÷ 144), plus 10% for straight layouts and 15% for diagonal or herringbone patterns.
Tiles = (Area ÷ Tile Area) × (1 + waste%)
Frequently asked questions
How much waste for diagonal patterns?
Use 15–20% for diagonal or herringbone layouts.
What size grout line?
1/8" for ceramic, 1/16" for rectified porcelain.
Estimates based on 2026 RSMeans USA data and national material averages. Always confirm quantities with your supplier or contractor before ordering.