Single-material calculator

Epoxy Floor Calculator

Concrete floor coating planning with slab prep, primer, body coat, decorative flake, and clear topcoat options built in.

Quick presets

Start from a typical North American scenario, then tune the job-specific inputs.

Inputs

Coating system

Coating System This calculator assumes a clean, dry concrete slab. Active moisture, oil contamination, or failing old coatings need separate prep review before coating.

Geometry

Floor Length (ft) Type it the way you measured it - 16' 6" or 16.5 both work. Floor Width (ft)

Prep + coating

Include floor primer Most residential concrete floors still need primer unless the coating manufacturer specifically allows direct-to-concrete application.

Include clear topcoat

Include slip-resistant additive Adds a slip-resistant broadcast additive for garages, wet entries, or shop floors.

Minor Crack Repair Length (lf) Use the total length of hairline and minor shrinkage cracks only; larger moving cracks or joint rebuilds need a separate repair scope.

Advanced settings

Waste Factor (%)

Regional settings

State / Pricing Region Selecting a state adjusts material prices by a state-level cost index, not by store listings in your city. States without an index keep the national baseline, and the estimate says so.

Use this coating takeoff after slab condition, prep scope, and moisture path are already reviewed.

Reset inputs

Use this button to recalculate without JavaScript or create a complete, shareable page URL.

2D plan

Schematic quantity basis

2D and 3D previews are schematic. Drag to orbit, and scroll or pinch to zoom when 3D is open.

3D assembly

Optional 3D check

3D is optional here. Use it to sanity-check the base profile after the 2D quantity path is clear.

System Solid-color epoxy

Floor area 400 sq ft

Epoxy kits 2

Primer gallons 2

Clear topcoat kits Not included

Crack filler tubes Not included

Plan details & review

Planning assumptions

Included scope: Slab cleaning, Primer coat, Body coat.

Planning assumptions · 6

Floor area uses one simple rectangular slab and does not subtract islands, stairs, curbs, pits, or equipment pads from the coating scope.
Prep allowances here cover degreasing plus minor crack repair only; grinders, shot blasting, moisture-mitigation primers, and slab patching remain outside the BOM.
Concrete moisture vapor, curing compounds, old sealers, and oil contamination can make floor coatings fail even when square-foot coverage looks adequate.
Crack repair in this calculator is limited to minor routed or static cracks; moving joints, slab-flatness correction, moisture mitigation, and spall rebuilds stay outside this scope.
Coverage rates use manufacturer-style baselines on properly profiled concrete and assume a single body coat at roughly 250 sq ft per kit. Surface temperature, porosity, roller loss, installer method, multi-coat systems, porous slabs, and heavy-fill flake builds can reduce real coverage and increase the real kit and topcoat count.
The BOM rounds packaged materials to whole purchase units such as gallons, bags, boxes, buckets, rolls, cartons, tubes, jars, bundles, or kits, so bought quantity can exceed the exact theoretical coverage shown by the area metrics.

Not included / Trade review

2 total scope notes to read before ordering or contractor handoff.

How pricing works

Schematic solid-color epoxy coverage for a 20 ft x 20 ft slab with primer included, clear topcoat omitted, and no crack repair allowance.

Material estimate for the quantities in this plan.

Need local install pricing?

Save this estimate to reopen it later, share the link or the plain-text takeoff, or export a PDF. Pin to compare stacks alternate inputs side by side.

Compare contractor quotes

Material list

Your build list

Each line shows a purchase quantity, a coverage amount, or a planning allowance - the line says which. Check pack sizes and your site conditions before you order.

Material	Assembly	Unit	Qty	Unit price	Total	Source
Concrete degreaser Calculator default	slab cleaning	gallon	2	$21.98	$43.96	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 06/05/2026 — price may have changed - verify before orderingRetailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 2 Quantity type: Purchase quantity Purchase quantity: 2 Coverage: Waste-adjusted floor prep area before coating Waste factor: 5%
Epoxy floor primer Calculator default	primer coat	gallon	2	$53.33	$106.66	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 06/05/2026 — price may have changed - verify before orderingRetailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 2 Quantity type: Purchase quantity Purchase quantity: 2 Coverage: Waste-adjusted primer coverage over prepared concrete Waste factor: 5%
Epoxy floor coating kit Calculator default	body coat	kit	2	$129.00	$258.00	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 08/09/2026Retailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 2 Quantity type: Purchase quantity Installed / coverage quantity: 400 Purchase quantity: 2 Waste quantity: 20 Coverage: Waste-adjusted body-coat coverage over the full slab area Waste factor: 5%

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Estimated materials total$408.62

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Current takeoff: 2 epoxy kits, 2 primer gallons, and 2 degreaser gallons for 400 sq ft of solid-color floor coating. Use this coating takeoff after slab condition, prep scope, and moisture path are already reviewed.

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