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Tiles for a 15x20 floor

A 15 × 20 ft floor is 300 square feet. With 12 × 12 inch tile laid straight you need about 324 tiles including 10% waste. Change the tile size or pattern below.

YOU NEED

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Estimate only. Bag yields, material density and waste vary by product and supplier. Confirm quantities with your supplier and check local building codes before you buy or build.

How many tiles for 15x20?

15 × 20 = 300 square feet. A 12 × 12 inch tile with a 1/8 inch grout joint covers just over 1 square foot, so you need 294 tiles before waste and 324 with 10% extra for cuts.

By tile size

12 × 24 inch tile: 163 tiles. 12 × 12 inch: 324. 3 × 6 inch subway tile: 2483. All include 10% waste for a straight or brick lay. Laid diagonally, 12 × 12 tile needs 338 because of the extra cuts (15% waste).

Grout

With 3/8 inch thick 12 × 12 tile and a 1/8 inch joint, a 15x20 floor takes about 21.5 lb of grout, or 3 ten-pound bags. Smaller tiles have more joints and need more grout.

Frequently asked questions

How many 12x12 tiles do I need for a 15x20 floor?

About 324, including 10% waste for a straight lay.

How many 12x24 tiles for a 15x20 floor?

About 163, including 10% waste.

How many square feet is a 15x20 floor?

300 square feet. Order about 330 sq ft of tile with waste.

How accurate is this estimate?

It is a planning estimate, not an order. Bag yields, material density and waste vary by product, supplier and job, so confirm quantities with your supplier and check local building codes before you buy or pour.

Are my measurements saved?

No. Everything is calculated in your browser. Nothing is uploaded or stored.