How much epoxy a square foot takes depends on the coat thickness. The table below gives fluid ounces per square foot for common floor coats, seal coats, and flood coats.
Direct Answer
About 10 fl oz per square foot for a 1/8 in tabletop flood coat, 5 fl oz at 1/16 in, and 2.5 fl oz for a thin 1/32 in seal coat. Floor coatings use far less: about 0.8 fl oz per square foot at 10 mils per coat. Add the edges and 10–15% for waste.
Takeaways
| Thickness | Fl oz per sq ft | Liters per m² |
|---|---|---|
| 10 mils (0.25 mm), floor coat | 0.8 | 0.25 |
| 20 mils (0.5 mm), floor coat | 1.6 | 0.51 |
| 1/32 in (0.8 mm), seal coat | 2.5 | 0.79 |
| 1/16 in (1.6 mm) | 5.0 | 1.59 |
| 1/8 in (3.2 mm), flood coat | 10.0 | 3.18 |
| 1/4 in (6.4 mm) | 19.9 | 6.35 |
Mixed resin, raw volume before waste. 1 US gallon = 231 cubic inches = 128 fl oz.
Fluid ounces per square foot = 144 × thickness in inches ÷ 1.805. The coverage calculator applies it to your area and adds edges, runoff, and waste.
Most low estimates ignore edge runoff, surface absorption, uneven thickness, and the fact that real kit sizes rarely match the exact raw volume.
At 1/8 in, one ft² holds 18 in³ = 0.077922 US gal, or 9.974 fl oz, before losses. At 1/16 in those numbers halve. For a floor label rate, use the epoxy floor coverage calculator instead; a tabletop flood thickness is not a universal floor specification.
FAQ
No. Thickness and application type must be known first.
Not usually. Floor systems are better estimated by published square-foot coverage per gallon and coat count.
Yes if the edges receive epoxy or cause runoff during the pour.
Related Pages
Enter square feet (or m²) and coat thickness to see how many gallons of epoxy you need, with edge runoff, waste, and cost for tabletops, bar tops, and countertops.
Understand how far a gallon of epoxy goes by coat thickness, coverage rate, surface type, and waste assumptions.
Resin material cost per square foot for tabletops, countertops, and bar tops: about $4.68 to $9.35 per sq ft at 1/8 in, depending on the price per gallon.
Estimate epoxy for tabletops and flood coats with surface coverage, finish thickness, runoff, waste, and top-coat resin guidance.
How much epoxy a garage or basement floor needs: turn square feet, coats, and your kit's coverage rate into gallons and kits to buy, with waste and material cost.
Reviewed · Calculation notes and corrections