Epoxy Calculator
(sq ft × coats ÷ coverage) × (1 + waste). Click any i for detail.
Floor
Area (sq ft)
i
Area
Floor you will coat. |
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|---|---|
Coats
i
Coats
Prime + topcoat is often 2. |
|
Coverage (sq ft / gal)
i
Coverage
Copy the kit. Thin coats cover more. |
|
Waste (%)
i
Waste
Texture, over-roll, and leftover in the pail. |
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Kit size (gal)
i
Kit
Mixed kit volume you buy. |
How to use this calculator
- Enter floor area in square feet.
- Set number of coats and coverage from the kit label.
- Add waste percent for texture and roller loss.
- Read gallons to mix and kits to buy.
Results explained
Gallons = area × coats / coverage × (1 + waste). Flake broadcast and moisture primers can change real coverage; trust the product sheet.
Quick reference: epoxy coverage
250 sq ft, 2 coats, 80 sq ft/gal → 6.25 gal before waste.
| Item | Detail |
|---|---|
| Coverage | always from the kit label |
| Two coats | multiply area×coats before dividing |
| 10% waste | typical planning fudge |
| Pot life | mix only what you can roll before gel |
Installed dollar pricing is on the epoxy flooring cost page.
How the estimate is built
gal = area × coats / coverage × (1 + waste%).
Example scenario
250 sq ft, 2 coats, 80 sq ft/gal, 10% waste → about 6.9 gal.
FAQ
Why add waste?
Rollers, edges, and textured floors consume more than flat math.
Does temperature change coverage?
Yes on site. Use label coverage at your expected pour temperature.
How many kits if kits are 3 gal?
Divide total gallons by kit size and round up to whole kits.