Calculate epoxy coverage from litres, gallons or kilograms.
Enter the epoxy you have, the wet layer thickness and a loss allowance to estimate coverage in m² or square feet. If the product is sold by weight, add the mixed-system density to convert mass into usable volume.
How much area will your epoxy cover?
Enter epoxy by volume or weight, choose the wet thickness and add practical loss. Weight calculations use the density you provide.
Use litres / gallons when the kit is sold by volume, or kilograms / pounds when it is sold by mass.
Epoxy coverage per litre
Wet-film geometry is straightforward: 1 litre spread over 1 m² makes a 1 mm layer. The same litre theoretically covers 2 m² at 0.5 mm or 0.5 m² at 2 mm before losses. This relationship is useful for coatings, tabletops and other thin applications.
Epoxy coverage per kg
Kilograms measure mass, not volume, so there is no universal m²-per-kg number. A mixed epoxy density of 1.10 kg/L means 1 kg represents about 0.91 L. Change the density field to the value published for your product before using a mass-based coverage estimate.
Square feet per gallon
Imperial coverage follows the same geometry. The result depends on wet film thickness, so a gallon spread at a thin coating depth covers much more area than the same gallon used for a thicker layer. Switch EpoxyCalc to Imperial and enter thickness in mils to see the result in square feet.
Theoretical coverage versus manufacturer coverage
This calculator converts physical quantity into geometric wet-film area. A manufacturer may publish a lower practical coverage rate because the complete system includes substrate absorption, roller losses, aggregate, fillers, multiple coats or a specified application rate. For garage and floor products, compare the result with the floor coverage calculator, which includes verified product-specific coverage data.
Need to convert weight and volume first?
Use the epoxy density and weight calculator when you need a direct litres ↔ kilograms or gallons ↔ pounds conversion. For resin and hardener proportions, use the mixing ratio calculator.
Coverage is not the same as pour compatibility
A quantity may be sufficient by volume and still be unsuitable for the intended layer depth. Thick castings need product-specific exotherm and pour-depth guidance. Use the deep pour calculator for thick pours and the river table calculator for live-edge channels.