Epoxy floor coverage calculator — m² per litre.

Epoxy coverage per square metre

The basic wet-volume relationship is useful because one square metre covered at one millimetre thickness equals one litre. That means a theoretical 0.5 mm coat uses about 0.5 L/m², a 1 mm coat about 1 L/m² and a 2 mm layer about 2 L/m² before waste.

The calculator uses this geometry directly, then adds the waste percentage you choose. It is a planning estimate, not a replacement for the product technical data sheet.

Already know how many litres, gallons or kilograms of epoxy you have and want to know how much area it can cover? Use the epoxy coverage calculator.

How many square metres does 1 litre of epoxy cover?

Theoretical wet coverage is approximately 2 m²/L at 0.5 mm, 1 m²/L at 1 mm, and 0.5 m²/L at 2 mm. Actual floor-paint coverage can differ because concrete porosity, broadcast aggregate, roller losses, multiple coats and solids content all affect consumption.

Quick epoxy paint coverage chart: 1 L, 5 L and 20 L

If you already know the amount of epoxy paint you have, the same wet-film relationship can be reversed to estimate area. The figures below are theoretical coverage before waste, substrate absorption, roller losses or manufacturer-specific application limits.

How much epoxy do I need for 1 square metre?

At 1 mm wet thickness, start with roughly 1 litre per square metre before waste. At 0.3 mm, the geometric requirement is about 0.3 L/m². At 3 mm, it is about 3 L/m². Use the calculator above for any area and thickness.

Epoxy coverage in square feet per gallon

For US units, one US gallon theoretically covers about 1,604 ft² at 1 mil wet thickness, 160 ft² at 10 mils, 80 ft² at 20 mils and 40 ft² at 40 mils. These are geometric wet-film values before substrate absorption, roller losses or product-specific application limits.

Epoxy coverage by kg

Do not assume one kilogram equals one litre. Resin systems have different densities and some floor products include fillers or high solids content. If your kit is sold by mass, use the manufacturer's density or published coverage figure. For a direct kg / lb-to-area estimate, use the epoxy coverage calculator. If you first need to convert kilograms to litres, use the epoxy resin density calculator.

Epoxy floor and paint coverage FAQ

How much area will 5 litres of epoxy paint cover?

About 10 m² at 0.5 mm wet thickness, 5 m² at 1 mm or 2.5 m² at 2 mm, before waste. A manufacturer's published coverage rate can be lower because actual coating systems include application losses, porosity and product-specific solids content.

How much epoxy paint do I need per square metre?

A 0.5 mm wet coat needs roughly 0.5 litres per m², a 1 mm layer roughly 1 litre per m² and a 2 mm layer roughly 2 litres per m² before waste. Use the calculator above for your exact area and thickness.

How much area does 20 litres of epoxy cover?

The theoretical coverage is about 40 m² at 0.5 mm, 20 m² at 1 mm or 10 m² at 2 mm. Always compare this with the product's technical data sheet before buying.

How much area does 1 kg of epoxy cover?

There is no reliable universal answer because kilograms measure mass while coverage depends on volume and thickness. First convert mass to volume using the exact product density, then calculate area from the intended wet-film thickness.

Why real floor coverage can be lower

Rough or porous concrete can absorb the first coat. Edges, mixing containers and application tools also create losses. Decorative flakes, quartz systems and multi-layer garage floors may use several products with different coverage rates. For those systems, calculate each layer separately and follow the manufacturer's specification.