Free Calculator · By SubcontractorHub Editorial Team · Published November 2026
Tile Calculator for Area, Waste, and Boxes
A tile calculator on this page turns an area and a tile size into a count. A 10 by 12 foot floor is 120 square feet. A 12 by 12 inch tile is 1 square foot. At 10 percent extra, that is 132 tiles. Boxes stay blank until you type the square feet printed on the carton. There is no price.
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Book a DemoHow the Tile Calculator Counts
Area divided by one tile. Extra percent is yours. Boxes use only the coverage you type.
Twelve by twelve inches is geometry: 144 square inches is one square foot. Ten percent extra is an input. The box field stays empty until you type a coverage.
120.000 sq ft. One tile is 1.0000 sq ft. With 10.0% extra, order 132.000 sq ft, or 132.000 tiles. Whole tiles, rounded up: 132. Type square feet per box to count boxes.
All calculations are estimates based on historical information and should be verified by the user.
Important: geometry, not a carton
All calculations are estimates based on historical information and should be verified by the user. This tool is provided as a free service for planning purposes only and is not a substitute for a professional assessment, a supplier quote, or applicable local code requirements.
This Tile Calculator Does Not Invent a Box
Cartons do not share one coverage. Some print 10 square feet. Some print something else. None of those numbers was fetched as a standard for this page, so the box field has no default. Type the number on the carton you are ordering. If you type 15 as a what-if, 132.000 square feet divided by 15 is 8.800 boxes, and rounding up makes 9. Say that 15 was typed. Do not tell a customer it is the brand.
Ten percent extra is the same kind of input. A straight room with no cuts may need less. A diagonal layout may need more. No waste table was fetched, so this tile calculator will not pretend 10 percent is a code. Change it. Zero means you added nothing.
An allowance for tile the homeowner has not picked yet is a pricing problem, not a count. That conversation is on how to price a remodeling job. A kitchen budget that still needs a measured floor is the kitchen remodel cost calculator. This page does not price either one.
Worked floor
Length 10 feet times width 12 feet is 120.000 square feet. Tile 12 inches by 12 inches is 144 divided by 144, or 1.0000 square foot. Extra 10 percent multiplies the area by 1.10, which is 132.000 square feet and 132.000 tiles. The count is already a whole number, so rounding up does not add a tile. A niche, a diagonal, or a tile you cannot reuse is why the extra percent exists. It is not inside the 120.
| Line | Formula | Example |
|---|---|---|
| Area | length × width, unless you type square feet | 120 |
| One tile | width inches × length inches ÷ 144 | 1 sq ft |
| Tiles | area × (1 + extra ÷ 100) ÷ tile area | 132 |
| Boxes | coverage ÷ square feet per box, only if you type it | blank |
How should you write the tile count?
- Say whether the area was length times width or a number you typed.
- Tile face in inches, and the square feet of one tile.
- The extra percent, labeled as an input.
- Tile count, and whether you rounded up.
- Boxes only with the carton coverage you typed. Name the number.
- No grout, no thinset, and no price on this list.
What the Count Leaves Out
A rectangle is the only room length times width describes. An L-shaped floor should be measured and typed as square feet so the two sides are not multiplied into a room that does not exist. The direct-area box is there for that. Once it is above zero, length and width drop out.
Grout joints make the module larger than the tile face. This tile calculator does not subtract a joint, because no joint width was fetched. If the layout is set to a module, count from the module you will actually install, and say you did. Thinset coverage is a manufacturer number on a bag. It is not on this page.
Pattern waste is not 10 percent unless you decide it is. A herringbone that breaks more tile needs a higher extra percent that you type. The round-up of a fractional tile is not that waste. In the example, 132 is already whole.
Frequently Asked Questions
How does the tile calculator count tiles?
Area in square feet is divided by the area of one tile. A 12 inch by 12 inch tile is 144 square inches, which is 1 square foot. A 10 by 12 foot floor is 120 square feet. At 10 percent extra, that is 132 square feet, and 132 tiles of that size. Ten percent is the number in the box. It is not a waste factor from a standard fetched for this page.
When does the tile calculator count boxes?
Only after you type square feet of coverage per box. The field starts empty. If you type 15, 132 square feet is 8.800 boxes, which rounds up to 9. Fifteen is an example you type. It is not a brand carton and it was not fetched as a product size.
Does this include grout or thinset?
No. No grout joint, no thinset coverage, and no price were fetched. The tile size you type is the face you are counting. A joint that changes the module is not subtracted.
Can I type the area instead of length and width?
Yes. If the direct square-foot box is above zero, that number is the area and length times width is ignored. Use that when the room is not a rectangle and you already measured the floor.
Count the Tile Before You Price the Allowance
Tiles are a division. The carton coverage is a number you type.
Get a Free DemoAll calculations are estimates based on historical information and should be verified by the user. This tool is provided as a free service for planning purposes only and is not a substitute for a professional assessment, a supplier quote, or applicable local code requirements.