Epoxy Table Calculator (Tabletop and River Table)
Enter the area you are filling or coating and how deep it is. The calculator gives the total resin to mix, splits it into part A and part B by your kit's ratio, and tells you how many layers to pour.
The formula
Worked example. a 36 × 60 in top coated 1/8 in thick needs 270 cubic inches, about 1.17 gallons before waste.
How to use it
- For a flood coat, measure the whole tabletop. For a river table or void fill, measure the river's length, its average width and its depth.
- Enter the thickness. A flood coat is usually 1/8 in (3 mm); a river pour is as deep as the gap.
- Enter your kit's mixing ratio by volume, such as 1:1 or 2:1, and the maximum pour depth from its data sheet.
- Add 5–10% for resin left in buckets and on tools, then mix in batches no larger than the label allows.
Questions
Why does pour depth matter?
Epoxy gives off heat as it cures. Pouring deeper than the resin is made for traps that heat, which can crack, yellow or bubble the piece. Coating resins are typically limited to about 1/8 in per layer; deep-pour resins can go 1–2 in or more.
Does wood soak up extra resin?
Yes. Bare wood absorbs resin and releases air. Seal-coat the wood with a thin layer first, and add a little more to the waste allowance for porous or live-edge slabs.
Can I mix the whole amount at once?
Only if it is within the batch size your resin allows. Large batches cure faster and hotter in the bucket, so mixing several smaller batches is safer for deep pours.