Epoxy Resin Calculator Guide
Epoxy resin is a versatile material used for river tables, countertop coatings, art projects, floor coatings, and more. Calculating the right amount is critical — too little leaves gaps, too much wastes expensive material.
Volume (cubic inches) = Length × Width × Depth
Volume (gallons) = Cubic inches ÷ 231
Epoxy density: ~1 gallon = 231 cubic inches
Mix ratio: Usually 1:1 or 2:1 (resin:hardener)
Common Mix Ratios
Most epoxy systems use either a 1:1 or 2:1 resin-to-hardener ratio by volume. Always follow the manufacturer's specific ratio — incorrect mixing leads to improper curing.
Epoxy by Project Type
- Flood coat: 1/8" thick — about 1.6 oz per sq ft
- Seal coat: Very thin — about 0.8 oz per sq ft
- Deep pour: 1-2" thick — calculate volume carefully
- River table: Depends on void dimensions
How to Use
Enter the length, width, and depth of your pour area. Select the mix ratio. The calculator shows total volume needed and the breakdown of resin vs hardener.
Tips for Success
Always add 10% extra for waste and mixing cup residue. Pour in thin layers if using standard epoxy (deep pours require special slow-cure formulas). Work in a temperature-controlled environment (70-80°F ideal).
Cost Estimates
Quality epoxy resin costs $40-80 per gallon for tabletop/art grade and $25-50 per gallon for floor coating grade. Deep pour epoxy is typically more expensive.