Epoxy Calculator
Your estimate
Epoxy needed (with 10 % extra)1 gal3.9 L
Kits2
- Epoxy weight
- 9.4 lb4.3 kg
Table tops, river tables, floors and coatings — volume, weight and kits.
Updated 2026-10-20 · Based on: exact volume formulas (1 US gal = 3.785 L).
How to use the Epoxy Calculator
- Pick rectangle or round.
- Enter the size and the pour depth (⅛ in flood coat, 1–2 in deep pours).
- Enter your kit size.
Formula
Volume = area × depth × 1.1 (spills, edges and mixing cups). Epoxy weighs about 1.1 kg per litre.
1 US gallon = 231 in³ = 3.785 L.
Worked example
With the values preset in the calculator above: (Rectangle)
- Length
- 6 ft
- Width
- 2 ft
- Pour depth
- 0.125 in
- Kit size
- 1 gallon
- Extra for waste
- 10 %
- Epoxy needed (with 10 % extra)
- 1 gal (3.9 L)
- Epoxy weight
- 9.4 lb (4.3 kg)
- Kits
- 2
Frequently asked questions
How much epoxy for a 6 × 2 ft table top?
A ⅛ in flood coat takes 1 gal with 10 % extra.
How much epoxy for a river table?
Measure the river gap (length × average width) and the depth — deep-pour resin in 1–2 in layers.
How thick can I pour epoxy?
Table-top epoxy about ⅛–¼ in per coat; deep-pour resins 1–2 in (or more) per layer — follow the maker.
More calculators
Estimates only — check quantities with your supplier and local building code before you order.