The Tile Installation Estimate Calculator Pack: Eight linked calculators, every formula checked by recalculation

Eight calculators for the tile setter quoting a job from your own prices, your own product labels and your own crew's speed: floor, shower wall, shower floor and backsplash areas, tile count and boxes with your waste allowance, thinset, grout, backer board and waterproofing from the coverage you enter, demo, haul-off and leveling, install labor with your own multipliers for tile size, pattern and location, a bid at your margin with the markup that matches it, a labor-only quote next to a labor-and-materials quote, and a check of the job once it is done. In the worked example 178 square feet takes 86.4 person-hours to install and bids at $45.84 a square foot with materials, demo and prep, or $37.39 labor only. Every figure is an example for you to overwrite; none of it is a claim about what tile costs or what anyone charges. These are estimates, not financial advice. Every formula was recalculated and checked against an independent implementation before this shipped.

What is in it

8 calculators, one per sheet. Overwrite the blue cells with your own numbers and everything else follows. Nothing is locked, there are no macros, and it opens in Excel, Numbers, LibreOffice and Google Sheets.

• Floor and wall areas: What area of floor, shower wall and backsplash does this job tile?
• Tile count and boxes: What tiles and whole boxes does each area take with your waste allowance, and what does the tile cost?
• Thinset grout and backer: What thinset, grout, backer board and waterproofing does the job take, in whole bags, sheets and units?
• Prep and demo: What does tearing out the old tile, hauling it and leveling the floor cost?
• Install labor: What crew days and labor does the install take, with your multipliers for tile size, pattern and location?
• Bid, margin vs markup: What labor-and-materials bid gives your target margin, and what does confusing margin with markup cost?
• Labor-only vs supplied: What do you quote if the customer buys the tile, and what if you supply it, and does your current labor price cover it?
• Job profitability check: Did the tile job make what the bid said it would?

Every formula was checked

This pack contains 83 formulas. Before it was published, every one of them was recalculated by a spreadsheet engine and compared against an independent implementation of the same arithmetic written in Python. All 83 agreed to within a cent, and the workbook carries a Verification sheet saying so.

That is an unusual thing to be able to claim about a spreadsheet, and it is the main reason to buy this one rather than download a free template. A formula that looks right and is wrong is worse than no formula at all, because you will act on it.

What each calculator assumes

There is a sheet listing this, because a calculator that hides its assumptions is just a number generator:

• Each area is a rectangle less the openings you enter. A niche, a bench or a curb adds area and cuts: add their faces to the shower walls, or time them as their own job.
• Tiles are counted from face size; grout joints are ignored, which errs toward a few extra tiles. Waste allowances are yours, set by tile, layout and room; the sheet does not supply one. Boxes are bought whole.
• Every coverage figure is yours, from the label or the maker's chart for your trowel, tile and joint. Which areas get backer board and waterproofing is your scope and the product maker's instructions; this sheet computes quantities, not what a wet area needs.
• The old tile comes up at one rate. One driver hauls while the rest of the crew keeps working. Leveler depth, and whether the floor needs it, is your call after you see the subfloor; the bag coverage is the label's at that depth.
• Every multiplier is your judgment from your own jobs; 1.0 is your baseline and the sheet supplies no difficulty factors. Waiting for thinset, waterproofing or grout to cure is not counted as hours; if it adds days on site, it shows up in travel only if you add the days.
• Overhead is spread evenly across jobs. The margin is taken on everything, tile included; sheet 7 shows the job with the customer buying the tile instead. The price per square foot is this job's, with its shower and demo in it.
• Labor only here means the customer buys the tile; you still supply the setting materials unless you enter 0. Your margin on the work is the same either way. A tile markup is your policy; tile the customer returns or reorders is not modeled.
• Every hour is costed at the same crew rate. Change orders the customer paid for (a niche, a bench, a pattern change) should be added to the bid before comparing, or they show up as an overrun.

What this is not

Not financial, tax or legal advice, and not a recommendation to buy, sell, borrow or sign anything. These are calculators: they show what a choice costs, not which choice is right for you. Where a published rate or threshold is used it is the one current when the pack was built; those change, the arithmetic does not.

Honest about the format

One .xlsx workbook, 8 calculator sheets plus Start Here, Assumptions and Verification. Not a PDF, not a physical product, not a Notion template. Available immediately after purchase; nothing ships.

Refunds

If this isn't what you expected, email me within 30 days and I'll refund you in full. No need to explain. Because it's an instant download I can't take the file back, so I'd rather you just had your money back.