Epoxy Floor Calculator
Work out how many epoxy or floor coating kits a job needs and what the material costs, from floor area, number of coats and kit coverage. For epoxy flooring contractors and for homeowners pricing a garage floor.
Free, no sign-up. Runs in your browser; nothing you type is stored unless you choose to email yourself the results.
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Email me these results. We'll send your numbers, plus how to turn this calculator into a lead magnet on your own website.
Three steps, about a minute
Step 1
Enter the Floor area in square feet and the number of Coats you plan to apply.
Step 2
Take Coverage per kit per coat from the product data sheet, and add your Price per kit.
Step 3
Read Kits needed and Material cost, using the two-car garage reference as a sanity check.
How the epoxy floor calculator works
Kits needed = floor area x coats, divided by coverage per kit per coat, rounded up to a whole kit. Material cost = kits needed x price per kit. Plug in the starting numbers: 500 sq ft at 2 coats is 1,000 sq ft of coverage. At 250 sq ft per kit per coat, that is 4 kits, or $720 at $180 a kit. The tool also shows about 400-500 sq ft as a two-car garage reference, a rough guide only. Coverage figures come from the manufacturer and assume a properly prepared surface. Porous, rough or freshly ground concrete soaks up more material, and flake broadcasts or topcoats may use different products. Test the slab for moisture and measure it before quoting a firm price.
| Floor area | 500 sq ft |
|---|---|
| Coats | 2 |
| Coverage per kit per coat | 250 sq ft |
| Price per kit | $180 |
| Kits needed | 4 |
|---|---|
| Material cost | $720 |
| Two-car garage reference | about 400–500 sq ft |
Check the product's stated coverage. Porous or rough concrete uses more material.
Using the numbers like a pro: tips for epoxy flooring contractors
Add extra material for porous or heavily ground concrete instead of trusting the label coverage. Running out mid-coat can leave visible lap lines and force a second trip for product.
Quote surface prep, crack repair and moisture testing as separate line items. Prep is what makes a coating last, and showing it explains the gap between your price and a store-bought kit.
Sell by the square foot, but check material cost on every job with this math. As coating systems and flake choices change, a fixed per-foot price can quietly lose margin.
Put a calculator like this on your own website
Many homeowners research garage floors by pricing a DIY kit, then realize how much prep is involved. A calculator on your site that shows their material needs, followed by a short form to request a professional quote, catches them at that turning point. Show a few finished floors next to the form so the quote request feels like the obvious next step.
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Epoxy Floor Calculator questions
How much epoxy do I need for a two-car garage?
A two-car garage is often around 400-500 square feet. Multiply the floor area by the number of coats, then divide by the coverage per kit stated on the product. At 250 square feet per kit per coat, a 500 square foot floor with two coats needs 4 kits. Rough or porous concrete may need more.
How many coats of epoxy does a garage floor need?
Many systems use a primer or base coat plus one or more topcoats, but the right number depends on the product, the look you want and how much wear the floor will see. Some systems add decorative flakes between coats. Follow the manufacturer's system instructions, since each coat has its own coverage rate and recoat window.
Why does porous concrete use more epoxy?
Porous or rough concrete absorbs part of the first coat and has more surface area to fill. Freshly ground or etched slabs also soak up more material than smooth, sealed ones. Expect to use more than the label coverage on the first coat, and test the slab for moisture, which can cause coatings to fail.
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