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Epoxy Resin Calculator

An epoxy resin calculator fills a rectangle, cylinder, oval, or river-table cavity, then splits millilitres into an A:B mix by volume. Grams use a typed density, usually near 1.1 g/ml. The river option treats about 35% of the bounding box as the void.

Quick Summary & Direct Answer
Making

How much epoxy does a river table need?

A bounding box of 80 × 40 × 2 cm is 6.4 L. At a 35% river fill that is 2.24 L. A 1:1 mix at 1.1 g/ml is 1.23 kg of A and 1.23 kg of B. Always check the kit’s ratio; some systems are 2:1 by weight.

Key Takeaways

  • Volume is geometric; waste and soak-in are extra.
  • Ratio fields are parts A to parts B by volume unless density differs by side.
  • Millilitres, litres, and US fluid ounces are listed together.
  • Deep pours may need a different product than a tabletop coat.

Mixed volume

6.4 L

Millilitres6,400
US fl oz216.4
Resin A3,200 ml / 3,520 g
Hardener B3,200 ml / 3,520 g

Results can be wrong. This calculator is unofficial. Figures can be incomplete, rounded, or not updated. Use them at your own risk and check a tape, datasheet, ball band, or official chart before cutting, mixing, buying, or publishing. River-table fill is modelled as 35% of the bounding box. Parts A and B use one density; a real kit can differ by weight versus volume. Limits of liability are in the terms of service.

Frequently asked questions

This page splits volume by parts, then multiplies each side by the same density. If A and B have different densities, weigh using the kit’s mass ratio instead.

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Publisher notes · reviewed 29 October 2026

Mix mass is volume times one density

Rectangle, cylinder, and oval volumes are geometric. River table starts at 35% of the bounding box. A:B splits that volume, then grams = ml × density. If A and B have different densities, use the kit’s mass ratio instead.

Deep pours

Tabletop epoxy and deep-pour epoxy are different products. Volume math does not pick a chemistry.

Worked examples

  • 80×40×2 cm at 35% fill, 1:1, 1.1 g/ml

    2.24 L; about 1.23 kg per side.

Limits of this page

  • Soak-in on porous wood is extra.
  • Temperature changes viscosity, not this volume.

Sources