Free Tool

Epoxy Resin Calculator

Estimate how much mixed epoxy resin and hardener your project needs. Enter your dimensions, pick a thickness, and we'll match you with the right GEEEKART kit.

Shape
Units
10%

Add 5–15% to cover mixing loss, drips and soak-in on porous wood.

How we calculate

Length × Width × Thickness = Volume

π × (Diameter ÷ 2)² × Thickness = Volume

The result is the combined resin + hardener amount after mixing, including your waste allowance. Example: a 24" × 18" flood coat at 1/8" is ≈ 54 in³ ≈ 0.89 L before waste.

Thickness guide

DepthBest for
1/16"Seal coats & very thin art coats
1/8"Tabletop flood coats
1/4"Trays, coasters, shallow molds
1/2"Small castings
1"+Deep pours, river tables, encapsulating

Pour like a pro

  • Seal porous wood with a thin coat first to reduce bubbles.
  • Measure A/B exactly per the ratio printed on your kit.
  • Add 5–15% extra for mixing loss and edge soak-in.
  • Work at stable room temperature; mix only what you can pour within the working time.
  • Pours over 1" should be split into layers per the kit's max depth.

Calculator FAQ

Does the result show resin and hardener separately?

No — the number is the combined amount after mixing. Check the ratio printed on your kit (all GEEEKART kits use an easy 1:1 by volume) and measure accordingly.

How much extra should I add for waste?

5–15% is typical. Mixing cups, drips, edge soak-in and porous wood all consume epoxy. 10% is a good starting point; go higher for live-edge or very porous projects.

Which kit do I need for a river table?

River tables usually need pours deeper than 1", so pick a deep-pour formula and split the pour into layers within the kit's maximum depth. The calculator recommends it automatically when your thickness is over 1".

Can I calculate in centimeters?

Yes. Switch the unit toggle and any dimensions you already entered are converted automatically. Results always show liters, fluid ounces and gallons.

Is the estimate exact?

It's a volume estimate. Textured surfaces, knots and open edges absorb more epoxy — when in doubt, round up to the next kit size. Questions? Email support@geekcraftlab.com.