EPOXY RESIN CALCULATOR

How to use the epoxy calculator?

Using the epoxy calculator, let's calculate how much epoxy you need to coat your surface. Our calculator has the following fields:

How thick do you want the epoxy coating?
- Coating: Enter the amount of epoxy coating you wish to apply, e.g., 1 in.
What is the shape and size of your surface?
- Surface shape: Select if your surface is rectangular or circular.
- Surface length: Enter the length of your surface, e.g., 36 in.
- Surface width: Enter the width of your surface, e.g., 24 in.
- Diameter: If you select circular surface shape, you'll need the diameter of your surface.
Here's how much epoxy resin you'll need:
- Epoxy: Here, you will see the required volume of epoxy resin you need, based on your surface shape and dimensions, i.e., 478.75 ounces.

Note that the exact volume may differ if there are any indents or extrusions on the surface.

How to calculate the epoxy resin amount manually?

Here's how you can manually calculate how much epoxy you need.

We use the following formula to calculate the volume of epoxy resin required for a rectangular surface.

Volume = length \times width \times height

The following formula is to calculate the volume of epoxy resin required for a circular surface.

Volume = π \times {radius}^{2} \times height

where:

$Volume$ – Required amount of epoxy;
$length$ – Length of the rectangular surface where we want to apply the epoxy;
$width$ – Width of the same rectangular surface where we want the epoxy;
$radius$ – Half the diameter of the circular surface where we want the epoxy; and
$height$ – Desired thickness of our epoxy coating.

Let's take the example of coating 1 in epoxy to a table with dimensions of 8 ft by 4 ft (or 96 in by 48 in).

Converting feet into inches and placing the values in the formula:

\begin{aligned} Volume & = length \times width \times height \\ = 96 in \times 48 in \times 1 in \\ = 4, 608 {in}^{3} \end{aligned}

To convert cubic inches into gallons, we divide it by 231.

\begin{aligned} epoxy volume & = Volume / 231 \\ = 4, 608 {in}^{3} / 231 \\ = 19.95 gallons \end{aligned}

Now let's take another example of calculating epoxy resin for a round table with a diameter of 32 in (or a radius of 16 inches). Here we will coat 2 inches of epoxy resin.

Placing the values in the formula:

Volume = π × (32 / 2)² × 2
= 1608.5 in³

\begin{aligned} Volume & = π \times {radius}^{2} \times height \\ = π \times (16 inches)^{2} \times 2 inches \\ = 1, 608.495 {in}^{3} \\ \approx 1, 608.5 {in}^{3} \end{aligned}

To convert cubic inches into ounces, divide it by 1.80469.

Thus,

\begin{aligned} epoxy volume & = Volume / 1.80469 \\ = 1, 608.5 {in}^{3} / 1.80469 \\ = 891.29 fluid oz (US) \end{aligned}

How to calculate 2 part epoxy resin ratio?

The epoxy resin always mixes with the hardener in a 2:1 ratio, where the epoxy is twice as much as the hardener. Divide the resulting volume by the area of your applicable surface to get the coating thickness:

Coating thickness = volume / area

FAQs

What is the epoxy resin calculation formula?

For epoxy resin amount calculation, we use the following formula:

Epoxy amount = area × coating

where:

area – Surface where the epoxy resin is applied; and
coating – Thickness of the epoxy coating.

How do I calculate how much epoxy resin I need?

To calculate the amount of epoxy resin required:

Measure the area of the surface.
Then multiply it by the thickness of the epoxy coating.

For example, on a surface of 36 inches, if you want 3 inches of epoxy coating, you'll need 108 cubic inches or 59.8 ounces of epoxy.

How do I calculate amount of epoxy for a table of 24"x24"?

To calculate the resin amount, multiply the surface area of your table by the required amount of resin coating. For 1" of resin thickness, you need 576 cubic inches or 319.7 ounces of epoxy resin.

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