Tile Coverage Calculator

Estimate how many tiles you need to purchase for your floor or wall tiling project. Accounts for tile dimensions, grout line gaps, and installation cut waste.

Tiling Area

Area Length

2 ft 12 ft 100 ft

Area Width

2 ft 10 ft 100 ft

Tile Specifications

Tile Size (Dimensions)

Grout Line Width

Layout Cut Waste Factor

Estimated Tiles Needed

0 Tiles

Coverage: 0 sq ft

How to Estimate Tiles

Tiling requires cutting edges and corners to fit, which produces scrap waste. While calculating simple rectangular areas is easy, factoring in grout line reductions and layout patterns ensures you don't run short mid-project.

Tile Sizing & Grout Line Effects

Though small, grout line spacing affects tile counts over large areas. Adding the grout width to both the length and width of the tile increases its effective coverage area, reducing the actual quantity of tiles needed by 1% to 5%.

Why Waste Cushion is Mandatory

A standard **10% waste buffer** is added to purchase orders. Tiles chip during cuts, and you must save spare matching tiles for future repairs (dye lots change, making it impossible to buy matching colors later). If you lay tiles on a **diagonal (45-degree)** or **herringbone pattern**, edge cuts increase, requiring a **15% waste buffer**.

Frequently Asked Questions

How many tiles are in a standard box? +

Box counts depend entirely on tile size. Standard 12"x12" tile boxes typically contain **10 to 15 pieces** (covering 10 to 15 sq ft). Large-format 24"x24" tiles often ship in boxes of **4 to 6 pieces**. Always check the box square footage listed by the retail supplier.

Can I use tile calculations for bathroom wall tiling? +

Yes. Simply measure the height and width of your walls to find the total wall square footage and plug that into the calculator. Remember to subtract windows or tub openings.