Epoxy Floor Calculator

Epoxy is a resin-based coating applied to concrete floors to create a durable, glossy surface — and getting the quantity right before you buy saves waste and extra trips to the store. Select your surface shape (rectangular or circular), enter your length and width (or diameter), set your coating thickness and coverage rate to get the gallons needed. Secondary outputs include surface area, total ounces, and coating volume in cubic inches.

feet
feet
feet

For circular surfaces only

inches

Common thickness: 1/8″ (0.125) for floors

Results

Gallons Needed

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Surface Area

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Total Ounces

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Volume

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Frequently Asked Questions

How much epoxy resin do I need for my floor?

The amount depends on your floor's surface area and desired coating thickness. For a standard 1/8″ thick coating, you'll need approximately 3-4 oz of epoxy per square foot.

What is the standard coating thickness for epoxy floors?

Most epoxy floor coatings are applied at 1/8″ (0.125 inches) thickness. This provides good durability and coverage while being cost-effective for residential and light commercial use.

How do I calculate epoxy for a circular floor area?

For circular surfaces, measure the diameter and use the formula: Volume = π × radius² × thickness. Our calculator automatically handles this conversion when you select circular shape.

Is this calculator 100% accurate?

This calculator provides estimates based on standard coverage rates. Always order 10-15% extra epoxy to account for waste, spills, and variations in surface texture or porosity.

What's the difference between coverage rates?

Standard coverage (3 oz/sq ft) works for most floors, heavy duty (4 oz/sq ft) provides thicker protection for high-traffic areas, and light coat (2 oz/sq ft) is suitable for decorative applications.

How long does epoxy flooring last?

Properly applied epoxy floors can last 10-20 years in residential settings and 5-10 years in commercial environments, depending on traffic, maintenance, and environmental conditions.

Can I use this calculator for countertops or tables?

Yes, this calculator works for any flat surface including countertops, tables, and art projects. Just enter the dimensions and desired thickness for accurate epoxy estimates.