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Calcimator

River Table Calculator

Calculate the total epoxy needed for a river table based on table length, river width, thickness, and average void depth.

Inputs

in
in
in
%

Results

Epoxy Needed (with 15% overage)

6.03 gal

Pours Required (2" max/pour)

1

Epoxy Needed770.64 oz
Exact Volume5.24 gal
Est. Cost (low)$301.5
Est. Cost (high)$482.4
Effective Volume1,209.6 cu in
How to Use This Calculator
  1. Enter the table length in inches.
  2. Enter the average river channel width in inches — measure across the void between the two wood slabs.
  3. Enter the overall table thickness in inches.
  4. Enter the average void depth as a percentage of the table thickness (typically 80–100% for a through-pour).
  5. Read the epoxy needed in gallons and ounces with 15% overage to account for uneven voids and edge sealing.
  6. Check the exothermic heat calculator if your pour volume is large to confirm safe pour depths and temperatures.
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