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Epoxy Volume Calculator
Estimate resin for a rectangular or circular pour, then round up to packages.
Quick answer
Start with the rectangular or circular pour volume, subtract the unfilled portion, add your waste allowance, then round up to whole packages. The A/B result follows the volume ratio you enter.
- Best for
- Planning a simple rectangular or circular resin pour when dimensions, package volume and volume mix ratio are known.
- Not for
- Converting a weight ratio to volume, choosing a safe pour depth or replacing the resin maker's instructions.
Formula and assumptions
Net volume = shape volume × (1 minus unfilled-volume percentage). Purchase volume = net volume × (1 + waste). Packages round up. Parts A and B split the purchase volume by the volume ratio entered.
Volume and weight mix ratios can differ. Use the volume ratio, density and safe pour depth on the product label.
Worked example
Epoxy Volume Calculator
Inputs
- Shape
- Rectangle
- Output unit
- Centimeters
- Length
- 120
- Width
- 60
- Diameter
- 80
- Thickness
- 1.5
- Unfilled volume
- 5 %
- Waste allowance
- 10 %
- Package size
- 1.5 L
- Part A volume ratio
- 2
- Part B volume ratio
- 1
Live result
- Net volume
- 10.26 L
- Buy this volume
- 11.29 L
- Packages
- 8
- Part A volume
- 7.52 L
FAQ
Questions this calculator answers
Can I enter a resin mix ratio shown by weight?
Only if the same ratio is also specified by volume. Weight and volume ratios can differ because part densities can differ. Use the volume ratio printed by the manufacturer for this calculator.
Why is purchase volume higher than net pour volume?
Purchase volume includes the waste percentage you enter and rounds up to the package size you select. Net volume is the estimated amount that remains in the filled part of the shape.
Will this calculator choose a safe pour depth?
No. Thickness is an input, not a recommendation. Maximum layer depth, cure conditions and mixing instructions depend on the product, so follow its label and technical guidance.
One calculator, several real tasks
