Tile Box Calculator
Use this free Tile Box Calculator to find how many boxes of tile you need for floors, walls, bathrooms, showers and kitchen backsplashes. Enter your project dimensions, tile size, tiles per box and waste percentage to calculate tile quantity, full cartons, purchased square footage and optional material cost.
Tile Box Calculator
Instant ResultProject Dimensions
Tile & Box Details
Check actual tile dimensions and carton coverage before ordering. Nominal tile sizes can differ slightly from manufacturer specifications.
What Determines How Many Boxes of Tile You Need?
A tile box calculation combines your room size, tile dimensions, tiles per carton and waste allowance. Accurate measurements help prevent both shortages and excessive leftover material.
Project Area
Measure the exact floor or wall area that will receive tile. For irregular spaces, divide the project into smaller rectangles and combine the square footage.
Tile Size
Large tiles cover more square footage per piece than small tiles. A nominal 12×24 tile covers about twice the area of a 12×12 tile.
Tiles Per Box
Carton quantities vary by manufacturer. Always check how many individual tiles are packed in one box before calculating the final purchase quantity.
Waste Percentage
Extra tile covers perimeter cuts, breakage and unusable pieces. Straight layouts often need less waste than diagonal or herringbone installations.
Layout Pattern
Straight layouts are efficient. Diagonal, chevron and herringbone patterns can produce more offcuts and may justify a larger waste allowance.
Full Box Rounding
If the calculation produces 7.25 cartons, you generally need eight boxes. Always round upward unless the retailer sells individual pieces.
How Many Boxes of Tile Do I Need?
To determine how many boxes of tile you need, calculate the tileable square footage first. Next, determine how much area one tile covers and divide the room area by that coverage. Add your waste allowance, round the number of tiles up, then divide by the number of tiles in each carton. Finally, round the carton result up to the next whole box.
For example, suppose you have a 120-square-foot floor and plan to install 12×24-inch tile. One nominal 12×24 tile covers approximately two square feet, so the project requires roughly 60 tiles before waste. Adding 10% increases the purchase quantity to 66 tiles. If each box contains eight tiles, 66 ÷ 8 = 8.25, which means you should purchase nine full boxes.
Project area ÷ coverage per tile = tile quantity. Add waste, then divide the final tile quantity by tiles per box and round upward to the next full carton.
How to Calculate Tile Coverage Per Piece
Most tile dimensions are listed in inches. Multiply tile length by tile width to find square inches, then divide by 144 to convert the result to square feet. For a 12×24 tile, 12 × 24 = 288 square inches. Divide 288 by 144 and the nominal tile covers about two square feet.
A 12×12 tile contains 144 square inches, which equals about one square foot. A 24×24 tile contains 576 square inches, or approximately four square feet. These values make quick estimates easy, but actual manufacturer dimensions can differ from nominal sizes.
Tile Box Calculator Examples
| Project | Tile Size | Tiles Per Box | Approx. Boxes With 10% Waste |
|---|---|---|---|
| 100 sq ft floor | 12×12 | 12 | 10 boxes |
| 120 sq ft floor | 12×24 | 8 | 9 boxes |
| 200 sq ft room | 12×24 | 8 | 14 boxes |
| 200 sq ft room | 24×24 | 4 | 14 boxes |
| 50 sq ft backsplash | 3×12 | 30 | 8 boxes |
Tile Box Calculator vs Tile Box Coverage Calculator
The Tile Box Calculator on this page is most useful when you know the tile dimensions and the number of tiles packaged in each carton. It calculates individual tile quantity first, then converts that number into boxes.
If the retailer already gives you an exact square feet per box figure, use the Tile Box Coverage Calculator instead. That tool divides your required square footage directly by carton coverage without needing individual tile dimensions.
Nominal tile-size math is excellent for planning, but the carton label usually provides the most accurate square-foot coverage for a specific product.
How Much Extra Tile Should You Buy?
Approximately 10% extra tile is a common recommendation for many straightforward installations. A simple rectangular floor with a straight layout may generate relatively little waste, while rooms containing many corners, diagonal layouts or intricate tile patterns can create more cuts.
Herringbone, chevron and diagonal installations often require 10% to 15% or more, depending on the tile and room. Natural stone and strongly varied decorative tile can also require extra pieces because some tiles may be rejected for appearance.
Use the Tile Waste Calculator or read the Tile Waste Percentage guide for a more detailed estimate.
Calculate Tile Boxes in Four Steps
Use the same workflow whether you are buying ceramic tile, porcelain tile, floor tile, bathroom tile, shower tile or kitchen backsplash tile.
Measure the Project
Measure floor length and width or wall width and tiled height. Calculate the total square footage of every area using the same tile.
Calculate Tile Quantity
Convert tile dimensions into square-foot coverage and divide the project area by the coverage of one piece.
Add Waste
Increase the tile quantity to account for normal cuts, breakage and pattern requirements before converting pieces into cartons.
Round Up Boxes
Divide the final quantity by tiles per box and always round the answer upward to a full carton.
How Many Boxes of Tile for Floors, Walls, Showers and Backsplashes?
How Many Boxes of Floor Tile Do I Need?
Start with the total floor square footage. A 12-foot by 15-foot room contains 180 square feet. If you are installing 12×24 tile, each nominal piece covers about two square feet, so you need approximately 90 tiles before waste. Add 10% and the quantity becomes 99 tiles.
If the box contains eight tiles, divide 99 by eight. The result is 12.375, which means you need 13 full boxes. Use the Floor Tile Calculator when you first need to calculate flooring area.
How Many Boxes of Wall Tile Do I Need?
Measure each wall's width and tiled height. Multiply those dimensions, then add all sections using the same product. Large windows or doors may be subtracted, although small openings are often left in the estimate because they create perimeter cuts.
Use the Wall Tile Calculator for bathrooms, feature walls and other vertical tile surfaces.
How Many Boxes of Shower Tile Do I Need?
A shower calculation typically includes several walls plus a floor, niche, curb or bench. Keep different tile products separate because shower floor mosaics and wall tiles usually have different sizes and box quantities.
The Shower Tile Calculator can help calculate wall and floor areas before you convert each product into boxes.
How Many Boxes of Backsplash Tile Do I Need?
Kitchen backsplashes may contain only 20 to 50 square feet, but outlets, windows, cabinet edges and pattern cuts can make the waste percentage important. Measure each backsplash section, combine the square footage and use a realistic waste allowance.
Use our Backsplash Installation Cost guide if you also need to estimate tile price, installation labor, grout and wall preparation.
How Many Boxes of 12×24 Tile Do I Need?
A nominal 12×24 tile covers about two square feet. For 100 square feet, you need about 50 pieces before waste. Adding 10% gives approximately 55 pieces. If each carton contains eight tiles, you need 6.875 cartons, so the purchase quantity is seven boxes.
Actual carton quantities vary. Some 12×24 tiles may come seven, eight or another number of pieces per box, so enter the information from your specific product.
How Many Boxes of 12×12 Tile Do I Need?
A nominal 12×12 tile covers about one square foot. A 100-square-foot room needs approximately 100 tiles before waste or about 110 tiles after a 10% allowance. If 12 tiles come in one box, 110 ÷ 12 = 9.17, which rounds up to 10 cartons.
How Many Boxes of 24×24 Tile Do I Need?
A nominal 24×24 tile covers approximately four square feet. A 200-square-foot project needs about 50 pieces before waste. With 10% extra, plan for 55 tiles. If there are four tiles per carton, divide 55 by four and round 13.75 up to 14 boxes.
Should I Buy One Extra Box of Tile?
Keeping an additional matching box can be useful for future repairs, especially when the tile has a unique shade, pattern or texture. Tile collections can be discontinued, and later production runs may not match perfectly.
The waste allowance may already leave several spare pieces, so whether you should purchase another full carton depends on the project, tile availability and retailer return policy.
Manufacturers package different numbers of pieces per carton. Always check both tiles per box and square feet per box before placing your final order.
How to Calculate the Cost of Tile Boxes
Once you know the number of cartons needed, estimating tile material cost is straightforward. Multiply full boxes by the price of one box. If your project requires nine cartons and each carton costs $54.99, the estimated material cost is $494.91 before tax, delivery and installation supplies.
Number of full boxes × price per box = estimated tile purchase cost. Add mortar, grout, trim, underlayment, delivery, removal and professional labor separately.
Price Per Box vs Price Per Square Foot
Retailers frequently advertise tile using a price per square foot even though the product is purchased in complete boxes. Because the required carton count must be rounded upward, your actual checkout total can be slightly higher than multiplying exact project area by the advertised square-foot price.
The Tile Cost Calculator can help you combine tile materials with waste, labor and other installation expenses.
Ceramic Tile Boxes
Ceramic is commonly packaged in cartons containing several pieces. Basic ceramic wall tile and subway tile can contain more pieces per carton than large-format floor tile because the individual tiles are smaller.
For material pricing, see the Ceramic Tile Cost guide.
Porcelain Tile Boxes
Large-format porcelain boxes may contain only a few pieces because individual tiles are large and heavy. A box with fewer pieces can still cover the same square footage as a carton containing many smaller tiles.
Review the Porcelain Tile Cost guide when planning your material and professional installation budget.
Tiles Per Box vs Box Coverage
Tiles per box is the number of individual pieces inside the carton. Box coverage is the total square footage covered by those pieces. Both numbers are useful, but if the manufacturer gives precise square-foot coverage, that is generally the fastest number to use for the final order.
For that calculation, use the Tile Box Coverage Calculator.
Tile Calculators and Cost Guides
Move from room measurements to tile quantity, box coverage, waste, material cost and installation planning with related TileCalcPro tools.
Frequently Asked Questions About Tile Boxes
Find answers about how many boxes of tile you need, tiles per box, 12×24 tile, waste allowance, carton coverage and tile material cost.
How do I calculate how many boxes of tile I need?
Calculate your total tile quantity, including waste, then divide that number by the number of tiles in each box. Round the result upward to the next complete carton.
How many boxes of tile do I need for 100 square feet?
The answer depends on tile size and pieces per carton. For 12×24 tile, a 100-square-foot area needs about 50 pieces before waste or 55 pieces with 10% extra. If eight tiles come in a box, you need seven boxes.
How many boxes of tile do I need for 200 square feet?
With nominal 12×24 tile, 200 square feet requires about 100 pieces before waste or 110 tiles with 10% extra. If the carton contains eight tiles, you would need 14 complete boxes.
How many 12×24 tiles are in a box?
There is no universal quantity. One manufacturer may package eight 12×24 tiles while another may package seven or another number. Check the product listing or carton label before calculating.
How many square feet does a 12×24 tile cover?
A nominal 12×24-inch tile contains 288 square inches. Divide by 144 and the nominal coverage is approximately two square feet per tile.
How many 12×12 tiles are in a box?
The number varies by product. A carton may contain 10, 12, 15 or another number of 12×12 tiles. Use the manufacturer's stated package quantity rather than assuming every carton is the same.
Should I add 10% waste before calculating boxes?
Yes. Add the waste allowance to your tile quantity before dividing by tiles per box. This ensures the final number of cartons includes pieces for normal cuts and breakage.
Should tile boxes be rounded up or down?
Always round upward unless the retailer sells individual pieces. If the result is 8.1 cartons, you generally need nine boxes.
What is the difference between Tile Box Calculator and Tile Box Coverage Calculator?
The Tile Box Calculator uses tile size and tiles per box. The Tile Box Coverage Calculator uses the manufacturer's stated square feet per carton. Both estimate how many boxes to purchase using different available information.
How much extra tile should I keep after installation?
Keeping several matching pieces is useful for future repairs. Some homeowners keep one unopened box, particularly when the tile is unique, discontinued or likely to be difficult to match later.
Can tile boxes from different lots look different?
Yes. Shade and caliber can vary between manufacturing lots. Whenever possible, buy the complete project quantity together and verify the packaging before installation.
What if I already know square feet per box?
Use the Tile Box Coverage Calculator. Enter the project square footage, waste allowance and exact coverage per carton to determine how many full boxes to purchase.
How do I calculate tile box cost?
Multiply the number of complete boxes by the price per carton. The calculator at the top of this page also performs this calculation when you enter a box price.
How many boxes of floor tile should I buy?
Calculate floor square footage, convert the area into individual tiles, add waste, divide by tiles per box and round upward. The exact answer depends on tile dimensions and carton quantity.
Are Tile Box Calculator results exact?
The calculator provides a planning estimate using the values entered. Before ordering, verify actual tile dimensions, manufacturer box coverage, tiles per box and the appropriate waste percentage for your installation.
Calculate How Many Tile Boxes You Need
Enter your room size, tile dimensions, tiles per box and waste allowance to estimate full cartons and tile material cost before ordering.