12x12 Tile Calculator
Your room (12x12 tile)
Picking a pattern sets the recommended waste factor.
Check the box label — it varies by brand.
Tiles to buy
132 tiles
- Area to cover
- 120 sq ft
- Area including waste
- 132 sq ft
- Tile size
- 12 x 12 in
- One tile covers
- 1 sq ft
- Boxes needed
- 9 boxes
- Waste applied
- 10%
Tile is sold by the box — round up and keep one spare box from the same dye lot.
12x12 tile coverage chart
| Room area | Tiles (no waste) | Tiles +10% | Boxes (15/box) |
|---|---|---|---|
| 50 sq ft | 50 | 55 | 4 |
| 100 sq ft | 100 | 110 | 8 |
| 150 sq ft | 150 | 165 | 11 |
| 200 sq ft | 200 | 220 | 15 |
| 300 sq ft | 300 | 330 | 22 |
| 500 sq ft | 500 | 550 | 37 |
| 1,000 sq ft | 1,000 | 1,100 | 74 |
Box counts assume 15 tiles per box — confirm on the label before you order.
Popular 12x12 floor tile and setting supplies
Daltile Florentine 12" X 12" Glazed Porcelain Floor Tile in Carrara (13 PC Per Carton) (12.22 SQFT Per Carton)
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Nexus Self Adhesive 12-Inch Vinyl Floor Tiles, 20 Tiles, 12 x 12 in | Decorative Tile Format: Dimensional Tile Texture Adds Coordinated Finish Detail.
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Art3d 30-Pack Peel and Stick Vinyl Floor Planks, 12 x 12 in, Taupe Ash | Premium Vinyl, Self-Adhesive, Waterproof, Wood Grain, Fade-Resistant, Scratch-Proof, Ideal for Kitchen, Dining Room, Bedrooms
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Do this math on the job site — in the free app
Smart Tile Calculator for Android: offline, in your pocket, no ads. iPhone version coming soon.
Tools the pros use for this job
12x12 Porcelain Tile
Daltile Florentine 12" X 12" Glazed Porcelain Floor Tile in Carrara (13 PC Per Carton) (12.22 SQFT Per Carton)
Check price on AmazonPorcelain in 12x12 is the workhorse floor tile — hard, cheap per sq ft, easy to cut.
Snap Tile Cutter
VEVOR Tile Cutter 48 in, Manual Cutting Machine, Heavy-Duty All-Steel Frame | For Precision Cutting of Porcelain, Ceramic, and Floor Tiles, with Laser Guide, Bonus Spare Cutter, and Manual Hand Tool
Check price on Amazon12x12 ceramic scores and snaps cleanly — no wet saw needed for straight cuts.
1/8 in Tile Spacers
500 Pcs 3 mm (1/8 Inch) Plastic Tile Spacers for Stone and Ceramic Tile | 500-Piece Pack,3 mm Spacing,Even Tile Layout,Plastic Construction,Multiple Installation Uses
Check price on AmazonThe standard joint for 12x12 tile — consistent lines make the floor look square.
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How this calculator works
Because one 12x12 tile equals one square foot, tiles needed ≈ square feet needed. A 10 ft × 12 ft room is 120 sq ft, so 120 tiles before waste and 132 tiles at 10% waste. The only trap is box math: 12x12 tile ships in boxes of 12–17 tiles depending on brand, so 132 tiles at 15 per box is 9 boxes, not 8.8.
Steps: measure the room at its widest points, subtract nothing smaller than a closet, add 10% waste (15% for a diagonal layout), divide by tiles per box, then round up and add one spare box for future repairs.
For nominal-vs-actual sizing: most 12x12 tiles measure 11 7/8" so the grout joint makes up the difference. Do not try to lay them out at exactly 12" on center without checking a dry row first — see the spacer size guide. Different size? 12x24 and every other size have their own calculators, and the tiles per square foot chart covers box conversions.
Frequently asked questions
How many 12x12 tiles do I need for 100 square feet?
100 tiles exactly, before waste. With a 10% waste factor buy 110 tiles — about 8 boxes if your box holds 15 tiles.
How many 12x12 tiles are in a box?
Most brands pack 12 to 17 tiles per box, covering 12–17 square feet. Home Depot and Lowe's house brands are usually 15 or 16 per box.
How many 12x12 tiles per square foot?
One. A 12x12 tile is exactly one square foot of coverage, ignoring grout joints.
Are 12x12 tiles out of style?
For floors, larger formats like 12x24 dominate new builds, but 12x12 is still the cheapest per square foot and the easiest DIY size to cut and set.
Related calculators
- 12x24 Tile CalculatorThe most popular plank size — counts, boxes and offset rules.
- 24x24 & All-Size CalculatorEvery tracked tile size from 2x2 to 24x48 in one dropdown.
- Tiles Per Square Foot ChartReverse calculator and master chart: tiles per sq ft and per box.
- Tile Waste Factor GuideHow much extra tile to order, by pattern and room complexity.
Guides worth reading next
- How to Measure a Room for Tile (Step by Step)Measure any room for floor or wall tile: handle closets and alcoves, convert inches to decimals, subtract fixtures, and add the right waste percentage.
- Choosing the Right Tile Size for Your RoomHow tile size changes a room: when 12×24 beats 4×4, why small rooms can take large tile, grout line math, and the flatness rule for big formats.
- Sanded vs Unsanded vs Epoxy Grout: Which One Do You Need?Grout types explained by joint width and location: when sand scratches tile, why epoxy wins in showers, and how much of each type a bag actually covers.