How To Calculate the Number of Tiles & Cartons for Any Room Size (Step-By-Step)

HOW TO CALCULATE THE NUMBER OF TILES & CARTONS FOR ANY ROOM SIZE

Before buying tiles for your project, take a little time to calculate. It saves you money, stress, and surprises. Here’s the simple formula:

Step 1 – Find the Floor Area

Multiply your room length × width.

(Example: 12ft × 12ft = 144 sq.ft)

Step 2 – Convert to Square Meters

1 m² = 10.764 sq.ft

So, Area in m² = Area in sq.ft ÷ 10.764

Step 3 – Find Tile Area

Tile area = Tile length × Tile width (in meters).

(Example: 600mm × 600mm = 0.6 × 0.6 = 0.36 m²)

Step 4 – Calculate Number of Tiles

Number of tiles = Floor area ÷ Tile area

Step 5 – Convert to Cartons

Each carton usually tells you how many m² it covers (check the packaging).

Cartons = Floor area ÷ Coverage per carton

Step 6 – Add Wastage Allowance

Always add 5–10% for cutting, breakage, and future repairs.

👉 Example: For a 12ft × 12ft room using 600 × 600mm tiles, you’ll need about 11 cartons (including wastage).

This method works for any room size and any tile size.

Next time you want to tile, don’t guess, calculate.