Epoxy Cost Calculator USA — How Much Does Epoxy Resin Cost?

Q: How much does epoxy resin cost per gallon in the USA?

Epoxy resin prices in the USA range from about $40–$80 per gallon for basic coating and tabletop epoxies, to $80–$150 per gallon for premium clear casting resins, and $150–$300+ per gallon for specialty marine or UV-stable formulations. DIY-grade products at home improvement stores typically run $50–$90 per gallon kit. Professional and bulk pricing can be significantly lower per unit.

Q: How do I calculate epoxy project cost?

To calculate epoxy project cost: (1) Determine how many gallons you need using an epoxy calculator. (2) Add 10–15% waste margin. (3) Multiply the total gallons by the price per gallon for your chosen product. Example: a 2×4 foot table needing 1.25 gallons at $70/gallon = approximately $87.50 in epoxy material cost, before tools, supplies, and finishing.

Q: Why is casting epoxy more expensive than tabletop epoxy?

Deep-pour casting resins are formulated with slower-reacting chemistry that generates less heat per volume — a more technically complex formulation than standard surface coatings. This slower cure chemistry uses different (and often more expensive) hardener systems. They also tend to be sold in larger kit sizes, which reduces the per-gallon premium somewhat.

Epoxy resin prices in the USA vary widely by product type, quality, and quantity. Before buying, you need to know two things: how much epoxy your project requires, and what a realistic price per gallon looks like for your product category. This guide covers both — with US pricing ranges and a simple cost estimation method.

Calculate how many gallons your project needs first — then multiply by your product's price per gallon.

Use the Epoxy Calculator →

US Epoxy Resin Price Ranges (per gallon kit)

Epoxy Type	Typical US Price/Gallon	Common Use
DIY tabletop / bar top coating	$40–$75	Surface coating, countertops, bar tops
Premium tabletop / UV-stable	$75–$130	High-clarity table finishes, outdoor use
Deep-pour casting resin	$60–$120	River tables, molds, thick inlays
Garage / floor epoxy	$30–$60	Concrete floor coating
Marine / structural epoxy	$100–$250+	Boat building, structural repair
Art / jewelry resin (small kit)	$20–$50 per 16–32 oz	Small pours, jewelry, crafts

Prices are approximate for retail/online purchases as of 2025. Bulk pricing (5+ gallons from specialty suppliers) can reduce cost by 20–40% per gallon.

How to Calculate Your Project Cost

Total Cost = Gallons Needed × (1 + 0.15 waste) × Price per Gallon

The 0.15 adds a 15% waste buffer. Adjust to 0.10 for simple pours with little overflow.

Example: A 2×4 foot table needing 1.25 gallons of tabletop epoxy at $70/gallon:

1.25 × 1.15 × $70 = ~$101 in epoxy material cost

Don't forget additional costs: Mixing cups (~$5–15), stir sticks (~$5), nitrile gloves (~$10), and sandpaper/finishing supplies (~$10–30) add to the total project cost. Budget an additional $30–$60 in supplies for most DIY projects.

Project Cost Estimates by Table Size

Table Size	Epoxy needed (2 coats)	Est. cost at $70/gal	Est. cost at $100/gal
1×1 ft	~0.16 gal	~$13	~$18
2×4 ft	~1.25 gal	~$101	~$144
3×6 ft	~2.75 gal	~$222	~$317
4×8 ft	~5.5 gal	~$445	~$635

These estimates include 15% waste and are for surface flood coat only. River table builds add significant additional resin cost for the channel volume.

Ways to Reduce Epoxy Cost

Buy in bulk: Most brands offer 2-gallon, 3-gallon, and 5-gallon kits at a lower per-gallon price than 1-gallon kits
Calculate precisely first: Over-ordering wastes money; under-ordering forces a mid-project rush purchase at retail price
Buy from specialty suppliers: Online resin suppliers often beat home improvement store prices by 15–30%
Avoid small "craft" kits: 16 oz craft kits cost $25–$50 per kit — often $200+ per gallon equivalent

Frequently Asked Questions

How much does epoxy resin cost per gallon in the USA?

DIY tabletop epoxies typically run $40–$75 per gallon; premium UV-stable and deep-pour casting resins run $75–$130 per gallon. Marine and structural epoxies can exceed $200 per gallon. Bulk purchasing reduces all these prices significantly.

How do I calculate epoxy project cost?

Determine how many gallons you need (use the epoxy calculator), add 15% waste, then multiply by your product's price per gallon. Add ~$30–60 for supplies (cups, gloves, sandpaper). That's your total project material cost.

Why is casting epoxy more expensive than tabletop epoxy?

Deep-pour casting resins use slower-reacting hardener chemistry to prevent dangerous heat buildup at thick pour depths. This more complex formulation costs more to manufacture. The price difference is typically $20–$50 per gallon over equivalent tabletop products.