Resin Pour Calculator
Calculate how much epoxy resin and hardener you need for your project.
Supports molds, coatings, and river tables.
Resin Needed
Epoxy resin is mixed with hardener at a specific ratio (usually 1:1 or 2:1 by volume). Calculating the right amount prevents waste and ensures proper curing.
Volume = Length × Width × Depth
Resin density is approximately:
- 1.1 g/ml (slightly heavier than water)
- About 9.2 lbs per gallon / 1.1 kg per liter
Common mix ratios (by volume):
- 1:1 — equal parts resin and hardener (most common for art resin)
- 2:1 — two parts resin to one part hardener (common for casting)
Coverage estimates for coatings:
- Thin flood coat: ~12 sq ft per mixed quart (1.1 sq m per liter)
- Standard pour (1/8 inch / 3 mm): ~6 sq ft per quart (0.55 sq m per liter)
Always add 10–15% extra to account for mixing waste and overflow.