Tile Installation Cost Calculator
Price a tile job from your own rates: tile and waste, thinset, grout, trim, substrate prep, waterproofing, demolition and setting labour, with the cost per square foot at the end.
What Tile Installation Costs, and Why One Rate Never Fits
Enter the area, the layout and your own rates and this works out the tile to buy including waste, the boxes, the setting materials from the coverage on your bag, and the labour, then divides the total by the area. The coverage boxes are asked for rather than assumed because thinset changes with the trowel notch and grout with the joint width, and a figure invented here would be wrong on your job. The reason there is no single per-square-foot rate on this page: a shower in mosaic and an open floor in large-format tile are the same area and nowhere near the same work.
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QUANTITIES
How to Price a Tile Installation
The per-square-foot figure people search for hides two numbers that move independently. The tile you can price exactly: square footage plus waste, straight off your supplier’s list. The installation you cannot, because 200 square feet of open floor in large-format tile and 200 square feet of shower in mosaic are the same area and nowhere near the same job. Price the tile, then price the setting materials and the hours as their own lines, and let the cost per square foot fall out at the end.
1. Measure the area and pick the layout first
The layout decides the waste allowance before it decides anything else. Straight set on a rectangular floor runs around 10%. A diagonal is nearer 15%, and herringbone or a heavy offset 20%, because every course generates cuts.
2. Turn the area into boxes
Tile is sold by the box, so a part box is a whole box you paid for. Divide the area plus waste by the coverage printed on the box and round up.
3. Price the setting materials off the bag
Thinset coverage depends on the trowel notch, which is set by the tile size, so a large-format floor eats more mortar per square foot than a small-format one. Grout depends on joint width, tile size and tile thickness. Both figures are on the bag, and both are the ones most commonly under-ordered.
4. Count the linear feet of exposed edge
Every finished edge needs bullnose tile or a metal profile, priced per linear foot. A small bathroom is almost all perimeter, which is why it costs more per square foot than a big open floor.
5. Price what has to happen before any tile goes down
Self-levelling compound, backer board, an uncoupling membrane, waterproofing in a wet area. Each is a material cost and usually a separate day, with a cure time in the middle. This is routinely half the material spend on a bathroom.
6. Price the demolition separately
Taking out the old floor, carrying it out and getting the substrate flat again is its own job. On stuck-down vinyl or an old mortar bed it can take longer than laying the new tile.
7. Put your hours against the job, not against the area
Format, layout, cuts and access drive the hours. Two rooms of the same size can be a day apart, and pricing both at one rate per square foot means one of them pays for the other.
Worked Example: a 180 Square Foot Floor
Open kitchen floor, large-format tile straight set, 10% waste, boxes covering 15.5 square feet, 22 linear feet of exposed edge at the doorways and the island.
| Item | Working | Result |
|---|---|---|
| Area | measured | 180 sq ft |
| Tile to buy | 180 x 1.10 | 198 sq ft |
| Boxes | 198 ÷ 15.5, rounded up | 13 boxes |
| Thinset | 180 ÷ the coverage on your bag at that trowel notch | bags, rounded up |
| Grout | 180 ÷ the coverage at your joint width | bags, rounded up |
| Trim | measured perimeter of finished edge | 22 linear ft |
| Substrate | levelling compound over the whole floor | 180 sq ft |
Worked Example: a Shower, Same Method
90 square feet of wall and floor, mosaic on the shower floor, waterproofing throughout, an existing tiled shower to strip out first.
| Item | Working | Result |
|---|---|---|
| Area | walls plus floor | 90 sq ft |
| Waste | small format, many cuts | 15% |
| Waterproofing | every square foot, plus every seam | 90 sq ft + corners |
| Exposed edge | niche, curb and outside corners | high per square foot |
| Demolition | strip the old shower to the studs | its own day |
| Hours | mosaic and cuts, not area | well above the kitchen floor |
Waste Allowance by Layout
Start here and adjust for the room. More cuts means more waste and more hours.
| Layout | Waste allowance | Why |
|---|---|---|
| Straight set, rectangular room | 10% | Cuts at two edges only |
| Straight set, awkward room | 12 to 15% | Alcoves, angles and obstructions |
| Diagonal | 15% | Every perimeter tile is a cut |
| Herringbone or heavy offset | 20% | Cuts throughout, not just at the edges |
| Large-format tile | + a little more | A bad cut wastes a big piece |
The Rest of the Job
These are the lines that separate a tile price from a tiling price.
Getting the substrate flat
Large-format tile is unforgiving of a floor that is out. Levelling compound is cheap next to lifting tile that lipped, and it needs to be in the quote rather than absorbed on the day.
Waterproofing
In a wet area this is not a finish, it is the part that decides whether the room survives. Membrane by the square foot, plus corners and seams by the linear foot, plus the time to do it properly.
Movement joints
Perimeters and changes of plane get silicone rather than grout. It costs almost nothing and it is the difference between a floor that stays put and one that tents.
Sealing
Grout and natural stone need sealing, and that is a return visit after the grout has cured. A visit is a visit whether it takes ten minutes or two hours.
Where Estimates Go Wrong
Quoting one rate per square foot for every room
A shower and an open floor are different jobs. One blended rate means the easy room subsidises the hard one, and you win the wrong jobs.
Ordering tile without the waste allowance
Dye lots change. Coming back for two more boxes three weeks later often means a visibly different tile, and then the whole floor is the problem rather than the shortfall.
Guessing the thinset coverage
It changes with the trowel notch by a factor of two or more. The number is printed on the bag; using anything else means an extra trip to the supplier mid-job.
Leaving the demolition out
It is invisible in the finished room and it is often the dirtiest, slowest part of the week. Price it as its own line so the customer can see what they are paying for.
Forgetting the edges
Trim and profiles are priced per linear foot and a small room has a lot of perimeter for its area. This is a common reason a bathroom quote comes out low.
Tile Installation Cost — Common Questions
What does tile installation cost per square foot?
The tile is the part you can price exactly. The installation is not really a per-square-foot number, because the same area takes very different hours depending on tile format, layout, the number of cuts the room generates and what has to happen to the substrate first. Price the tile from area plus waste, then price levelling, waterproofing, setting materials and labour as their own lines.
How much waste should I allow?
Around 10% for a straight set in a rectangular room, 15% for a diagonal, and 20% for herringbone or a heavy offset. Add to it for a room with lots of alcoves and angles, and for large-format tile where a bad cut wastes a big piece.
Why is a small bathroom more expensive per square foot than a big floor?
Because almost all of it is perimeter. Cuts, edges, trim, corners, waterproofing and fixtures to work around all scale with the outline rather than the area, and a small room has a lot of outline for very little floor.
How many bags of thinset will I need?
Divide the area by the coverage on the bag at the trowel notch your tile size calls for, then round up. The tool asks you for that coverage rather than assuming one, because it varies by product and by notch far too much to guess.
Should the customer buy the tile?
That is your call, and it changes the quote either way. If they buy it, put the waste allowance in writing before they order, because a short order stops the job and the argument that follows is not one you want.
Does the tool include the old floor coming out?
Yes, as a separate rate per square foot, and it lands in the labour total rather than the materials. Keeping it visible makes it easier to explain and easier to drop if the customer wants to do it themselves.
What about natural stone?
Same arithmetic, different rates and an extra line: sealing before grouting on most stone, and a return visit to seal again afterwards. Stone is also heavier, which can bring the substrate into question.
The Other Calculators
All free, all the same idea: measurements in, quantities out, your own prices on top.
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Open the calculator →Tile Calculator
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Open the calculator →Painting Cost Calculator
Price a painting job: paint, primer, preparation hours, trim, access and sundries at your own rates, interior or exterior, per square foot.
Open the calculator →Drywall Repair Calculator
Price a drywall repair the way it is actually quoted: by repair type, hours, trips to the house and your minimum callout charge.
Open the calculator →Drywall Mud Calculator
How much joint compound and tape a job takes, by finish level, converted into the boxes, pails and bags you actually buy.
Open the calculator →Electrician Calculator
Wire length and cost for a circuit run, by conductor size and material, plus what decides the price of the job: open walls, the number of openings, and what the panel can take.
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