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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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