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.