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

Eight calculators for the installer quoting a flooring job from your own prices, your own product labels and your own crew's speed: square feet across several rooms and closets, boxes to order with your waste allowance for a straight or diagonal layout, underlayment rolls, baseboard sticks and transitions, tear-out and haul-away, install labor from your crew cost and install rate, a supply-and-install bid at your margin with the markup that matches it, a labor-only price per square foot, and a check of the job once it is done. In the worked example 583 square feet takes 27 boxes, 43.9 person-hours to install and bids at $11.36 a square foot supplied and installed. Every figure is an example for you to overwrite; none of it is a claim about what flooring 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.

• Room areas: What floor area does this job cover, closets and halls included?
• Boxes to order: What do you order in whole boxes for a straight or a diagonal layout, and what does the flooring cost?
• Underlayment and trim: How much underlayment, baseboard and transition strip does the job take, and what do they cost?
• Tear-out and haul-away: What does pulling up the old floor and hauling it away cost?
• Install labor: What crew days and labor does the install take at your crew's speed and cost?
• Bid, margin vs markup: What supply-and-install bid gives your target margin, and what does confusing margin with markup cost?
• Labor-only price per sq ft: What labor-only price per square foot covers your crew, overhead and margin, and what does your current price pay?
• Job profitability check: Did the job make what the bid said it would?

Every formula was checked

This pack contains 75 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 75 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 space is a rectangle. Split an L-shaped room into two rectangles and enter them as separate rooms, or add a room by copying the rows. The area under cabinets and fixed islands is your takeoff.
• Waste allowances are yours, from your own jobs with this product and layout; the sheet does not supply one. Boxes are bought whole. Any spare boxes the customer keeps for repairs are a separate line you add.
• Baseboard is new stock bought in whole sticks. If the old base goes back on, enter 0 for its price and keep the feet for the labor on sheet 5. Whether underlayment is needed, and which, is the product maker's and your call, not this sheet's.
• The old floor comes up at one rate. One driver hauls while the rest of the crew keeps working. Scraping adhesive or patching the subfloor is not in the rate unless you time it in; prep hours go on sheet 5.
• Rates are crew rates: the whole crew working together. The crew cost per person-hour is your floor, what an hour costs you, not a price. Stairs belong as their own job or as prep hours you time.
• Overhead is spread evenly across jobs. The price per square foot is this job's: a smaller floor carries the same overhead share and trip costs over fewer feet, so price it on its own numbers rather than at this rate.
• The customer buys the flooring, underlayment and trim; only the supplies entered are yours. Tear-out is priced separately on sheet 4. The per-square-foot figure is this job's, with this job's prep and trim in it.
• Every hour is costed at the same crew rate. Change orders the customer paid for (an added closet, stair nosing) 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.