Epoxy Science

Interactive planning tool

Epoxy floor coverage calculator

Turn the exact product's stated coverage and package size into a transparent quantity estimate. No product rate, coat count, container size, or waste percentage is assumed for you.

Project and product inputs
Calculate unlike primer, body, and topcoat products separately.
Blank means 0%. The calculator does not prescribe a factor.

Estimate

Quantity result

Enter the project, product, and package values to calculate. Every required assumption remains visible in the form.

Advanced theoretical film-build mode

Use this only when the exact product document supplies the target film thickness and, for DFT calculations, solids by volume. The result is theoretical coverage with no allowance for porosity, profile, transfer loss, retained material, or waste.

Film-build inputs

What this calculator does—and does not do

The main calculator divides total coated area by the coverage rate you enter. It then reports liquid quantity before contingency, applies only the contingency percentage you supplied, and rounds that result up to complete containers using the package size you entered.

It does not decide how many coats the system needs, whether a product can be applied at the implied thickness, whether components can be split, or whether the coating is suitable for the slab. The current TDS and complete system instructions remain authoritative.

Stated coverage is the safest starting point

Use the rate stated for the exact layer and application. A primer over porous profiled concrete, a smooth body coat, a broadcast receiving coat, and a topcoat over aggregate can have different consumption. If the data sheet gives a range, use the end that matches its documented application condition and preserve the range in your estimate.

Plan unlike products separately. Adding two coats in this form is appropriate only when both coats use the same product at the same valid rate. The detailed epoxy floor thickness and coverage guide explains WFT, DFT, mils, layer scheduling, and practical loss.

Theoretical film-build formulas

One US gallon spread uniformly one mil thick covers approximately 1,604 square feet. One liter spread one micrometer thick covers 1,000 square meters. The advanced mode uses these geometric relationships:

  • coverage (ft²/US gal) = 1,604 ÷ WFT (mils)
  • coverage (ft²/US gal) = 1,604 × solids fraction ÷ DFT (mils)
  • coverage (m²/L) = 1,000 ÷ WFT (µm)
  • coverage (m²/L) = 1,000 × solids fraction ÷ DFT (µm)
  • DFT = WFT × solids-by-volume fraction

DeFelsko and Elcometer explain the WFT/DFT relationship and wet-film measurement. Carboline product data illustrates the 1,604 ft²/gal-at-one-mil theoretical baseline while explicitly requiring allowance for application loss.

Why actual consumption can be higher

Concrete profile, porosity, repairs, joints, low areas, broadcast texture, application tools, material left in containers, batch loss, and field variation can all increase consumption. The calculator does not hide these inside a generic percentage. Enter a contingency that is justified for the documented product, substrate, crew, packaging, and consequence of shortage.

Commercial planning sequence

  1. Select a manufacturer-designed primer, body coat, and topcoat assembly appropriate to the prepared slab.
  2. Record the stated coverage, permitted film build, and package size for each component.
  3. Calculate each product separately and round to whole mixable packages.
  4. Match mixers, pails, squeegees, rollers, and wet-film gauges to the batch size and stated application method.
  5. Confirm the crew can place the batch within its working time and complete succeeding layers within their recoat windows.

Future product comparisons may pass documented coverage and kit data into this tool. No product data or affiliate destination is preloaded now. See the affiliate disclosure and return to the epoxy flooring system hub for the broader decision path.

Sources and calculation references

Sources accessed September 2026. Product documents can change; verify the current revision before purchasing or applying material.