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Flooring & Walls ★★★★★ Verified Tool

Tile Calculator

Calculate required ceramic, porcelain, or stone tiles, box counts, and spare backup tiles.

⚙️ Enter Project Parameters

sq ft
in
in
%
sq ft
📊 Calculation Results LIVE ESTIMATE
0
Total Individual Tiles Needed

📐 Mathematical Formula & Standard

Tile Area = (Tile Length in × Tile Width in) ÷ 144
Total Tiles = Ceiling((Surface Sq Ft × (1 + Waste % / 100)) ÷ Tile Area)
Boxes = Ceiling(Gross Sq Ft ÷ Box Coverage)

📖 Comprehensive Guide & Pro Estimating Tips

Whether installing 12x24 porcelain floor tiles or subway backsplash tile, estimating box counts and cuts is critical to avoiding mid-project delays.

Why Extra Tile is Essential

Always purchase 10% to 15% extra tile. This accounts for edge cuts, corner trimming, breakage during installation, and long-term repair replacements from the same dye lot.

❓ Frequently Asked Questions

How many tiles are in a 12x12 box? ▼
Most 12x12 inch tile boxes contain 10 to 15 tiles (covering 10 to 15 square feet).
Does grout line width affect tile count? ▼
Grout joints slightly reduce the tile count, but keeping the waste margin at 10% comfortably covers grout gap differences.

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