Epoxy Calculator – Resin, Hardener & Kit Counts
Use this epoxy calculator to estimate how much resin (Part A) and hardener (Part B) you need for coatings, countertops, flooring, river tables, and deep pours. Choose coating or deep pour, enter your dimensions and thickness, select a 1:1 or 2:1 mix ratio (or set a custom ratio), and add a small waste allowance for mixing losses. Results show total volume in liters and gallons, split A/B amounts, and the number of kits to order.
How It Works
Volume = area × thickness. We apply your waste allowance and then split the total mix by the selected ratio (A : B). For deep pours, the tool also suggests the number of layers based on a maximum single-pour depth to help manage heat (exotherm).
Tips for Better Results
- Coatings: 1–3 mm thickness is common for clear coats on tables and floors.
- Deep pours: Many products recommend ≤2 in (50 mm) per layer; follow your product’s datasheet.
- Temperature & cure: Warmer rooms lower viscosity and speed cure; avoid high humidity for clear finishes.
Related Tools
For more resin work, try the Resin Calculator. Planning a patio or path? See the Paver Calculator.
Important Estimate Disclaimer
The results provided by this calculator are intended as general estimates only and should not be considered precise engineering measurements. Actual material requirements, costs, and quantities can vary significantly based on site conditions, local building codes, soil type, reinforcement requirements, climate exposure, and the intended use of your project.
These calculators are designed to help you plan and budget your project more effectively, but they do not replace professional advice from a qualified contractor, engineer, or building inspector. Always verify your calculations and assumptions with trained professionals before placing material orders or commencing construction.
For more information on the assumptions, formulas, and data used in these tools, see our Data Sources and Methodology pages.
Material estimates, cost figures, and volume calculations are approximate and may not reflect your actual requirements. Always double-check dimensions and project-specific needs, and consider adding a contingency allowance for waste, over-excavation, and unforeseen conditions.
If you are unsure about any aspect of your project — including structural requirements, reinforcement needs, drainage, or load-bearing capacity — consult with a licensed professional before proceeding.