Volume
Example: 100 cm × 20 cm × 3 cm = 6000 cm³, or about 6 litres of mixed resin.
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How to calculate epoxy resin quantity
The safest approach is to calculate resin by volume first, then check the TDS for mixing ratio, density, working time and maximum layer thickness.
Calculation
In this guide
Quick answer
How to calculate epoxy resin quantity
The safest approach is to calculate resin by volume first, then check the TDS for mixing ratio, density, working time and maximum layer thickness.
The key is moving from intuition to measurable volume: dimensions, voids, allowance and only then the right resin system.
If the result is large, do not buy resin immediately — first check maximum layer thickness, pot life and working conditions in the TDS.
How to choose
Use the same units for length, width and height.
For irregular forms, calculate several simpler shapes.
After volume, check how many A+B kits you actually need.
Density
Not every resin weighs exactly 1 kg per litre. Use manufacturer data for purchase quantities.
Stages
If the result exceeds maximum layer thickness, split the pour into stages.
How to approach it in practice
Step by step
Measure the real pour space
Do not rely only on table dimensions. Measure length, average width and planned pour height; for irregular wood, split the shape into simpler sections.
Convert volume to litres
Calculate in centimetres and divide cm³ by 1000. This gives an immediate estimate of mixed A+B resin.
Add process allowance
Add reserve for cups, leaks, raw wood, degassing and finishing. Small voids often need a larger percentage allowance than big pours.
Check product limits
Compare the result with the TDS: maximum layer, working temperature, pot life and mixing method. Litres alone do not tell you whether one pour is safe.
Save the result with the project
If you quote for a client, save volume, assumptions and selected resin in the project card. It makes price changes and production easier.
Common mistakes
Mistake 1
Calculating length and width without pour height.
Mistake 2
No allowance for cracks, knots, cups and sanding.
Mistake 3
Buying resin before checking maximum layer thickness.
Mistake 4
Mixing litres, kilograms and A+B ratios without checking density.
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Next step
Calculate before guessing
Open the calculator, enter dimensions and save the result with the Studio project. It is a better basis for a quote than a quick estimate.
FAQ
What is the basic formula?
Volume = length × width × height. If you calculate in centimetres, divide cm³ by 1000 to get litres.
Is one litre of resin one kilogram?
Not always. Density depends on the product, so check the technical data sheet.
Should I add allowance?
Yes, usually 5-12%, and more for leaky or porous parts.