Tile Installation Calculator

Calculate tiles needed based on size.

Room Area — Tiles Needed — Boxes Needed —

Tile Installation Info

Includes 10% extra for waste. Larger tiles install faster.

GUIDE

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How to Calculate Tile Quantity (㎡)

㎡ (square meter) is the tile installation area, and calculating the required number of tiles is essential. Basic formula: Tiles needed = (Room area ÷ Tile area) × 1.1 (10% waste). Example 1: Room 5m × 4m = 20㎡, Tile 30cm × 30cm = 0.09㎡ (0.3×0.3). Tiles needed = (20 ÷ 0.09) × 1.1 = 244 tiles. Example 2: Bathroom 2m × 1.5m = 3㎡, Tile 20cm × 20cm = 0.04㎡. Tiles needed = (3 ÷ 0.04) × 1.1 = 83 tiles. Box ordering: Tiles are sold by the box. 30×30cm tiles usually come 11 tiles per box (1㎡), 20×20cm come 25 per box. For 244 tiles needed → 244÷11 = 22.2 boxes → Round up to 23 boxes.

Tile Size Features and Selection Criteria

Large tiles (60×60cm, 80×80cm, 100×100cm): 3~5 tiles per ㎡. Pros: Fast installation, fewer grout lines, space looks larger. Cons: Hard to cut, expensive to replace, leveling critical. Recommended: Living room, entrance, office. Installation cost: $20~30/㎡. Medium tiles (30×30cm, 40×40cm): 6~11 per ㎡. Most commonly used size. Pros: Reasonable price, easy installation, various designs. Recommended: Kitchen, bathroom, balcony. Cost: $15~25/㎡. Small tiles (10×10cm, 15×15cm, 20×20cm): 25~100 per ㎡. Pros: Works for curved/narrow spaces, detailed patterns. Cons: Slow installation, many grout lines, high labor cost. Recommended: Bathroom walls, kitchen backsplash, accent walls. Cost: $25~40/㎡.

Why Include 10% Waste and Budget Planning

Causes of waste: ① Cutting damage (30%), ② Transport/handling breakage (20%), ③ Installation cracks (20%), ④ Corner/edge trimming (20%), ⑤ Color/pattern defects (10%). Waste rate standards: Straight layout 10%, 45-degree diagonal 15~20%, complex patterns 20~25%. Curved or narrow spaces (bathroom walls) can reach 25~30%. Budget planning: Tile material + installation + supplies. Example: 20㎡ living room, 60×60cm tiles. Tiles needed: (20 ÷ 0.36) × 1.1 = 61 tiles. Tile price: $6 per tile → Total $366. Installation: $25/㎡ → 20㎡ = $500. Supplies (cement, grout, adhesive): $80. Total budget: $946 (about $47/㎡).

Tile Pattern Impact on Quantity (Straight, 45°)

Straight layout: Most basic installation. Tiles aligned horizontally and vertically. Waste rate 10%. Pros: Fast, cheap, neat grout lines. Cons: Plain. Recommended: General homes, offices. 45-degree diagonal: Tiles rotated 45 degrees in diamond shape. Waste rate 15~20%. More corner cutting increases waste. Example: 20㎡, straight needs 244 tiles vs 45-degree needs 267 tiles (10% more). Pros: Space looks larger, premium feel. Cons: Installation cost 20~30% higher, time 1.5×. Recommended: Living room, hotel lobby. Herringbone pattern: Rectangular tiles in V-shape. Waste rate 20~25%. Pros: Unique design, luxury. Cons: Complex, cost 2×. Recommended: Entrance, boutique.

Tile Installation Cost Calculation and Quote Understanding

Installation cost components: ① Labor (tiler + assistant), ② Materials (tiles + grout + adhesive), ③ Removal (existing tile demolition), ④ Leveling work (floor leveling), ⑤ Miscellaneous (waste disposal). Tiler labor: Skilled worker $150~250/day, assistant $100~120/day. Per ㎡ cost $15~40/㎡. Large tiles/straight layout cheaper, small/pattern expensive. Material costs: Budget tiles $4~8/tile, mid-range $8~25/tile, premium (imported) $40~80/tile. Grout: $25~40 (20kg), adhesive: $30~50 (20kg). Removal: Existing tile removal $8~12/㎡, concrete breaking $15~25/㎡. Leveling: Cement plastering for uneven floors $12~20/㎡.

Tile Selection Guide (Size, Material, Purpose)

By purpose: Bathroom floor → Non-slip tiles, 20×20cm or 30×30cm, rough matte surface. Bathroom walls → Low absorption porcelain, 15×30cm rectangular, bright colors. Kitchen floor → Acid/oil resistant, 40×40cm large, fewer grout lines for easy cleaning. Kitchen backsplash → Glossy tiles, 10×30cm, oil stain easy to clean. Living room → Luxury marble/wood pattern, 80×80cm or 100×100cm, thin grout. Entrance → Durable porcelain, 60×60cm, dark color (hides dirt). By material: Porcelain → 0.5% absorption, indoor/outdoor, mid-high price. Ceramic → 1~3% absorption, most common, mid price. Earthenware → 10%+ absorption, walls only, cheap. High-end porcelain → Ultra-low absorption, premium, expensive.

Frequently asked questions

Why does the calculator add 10% extra tiles?

The 10% accounts for typical waste from cutting, breakage during transport, and edge trimming, so you don't run short during installation.

What units should I use for room and tile dimensions?

Enter room width and length in meters (m), and tile width and length in centimeters (cm). The calculator handles the unit conversion automatically.

Where do I find how many tiles come in a box?

This is usually printed on the tile packaging or listed in the product details from the retailer. Enter that number to also get the boxes needed.

Does this calculation work for diagonal or herringbone layouts?

This tool assumes a standard straight layout with 10% waste. For 45-degree diagonal (15-20% waste) or herringbone (20-25% waste) patterns, add extra tiles beyond the calculated result.

What if the result shows a decimal number of tiles?

Since tiles can only be bought as whole units, always round up the decimal result to the nearest whole tile.