Resin Coating Calculator
Work out the resin volume and weight to coat a table top, a canvas or a small piece at a given thickness, per coat and in total.
At a glance
- What you enter
- Surface type, Surface shape, Length, Width, Diameter, Shape factor, Thickness per coat, Number of coats, Waste allowance, Resin density, Resin price per millilitre
- What you get
- Resin for one coat, Total resin including waste, Total weight including waste, Resin cost including waste
- Formula shown
- Yes, every step, right below your results.
- Cost and privacy
- Free, no account needed, and nothing you type is stored.
See worked examples ↓ Read the FAQ ↓ Share this calculator ↓
Results are estimates for general information only, always verify with a professional or official source before acting on them.
How to use the Resin Coating Calculator
- 1 Enter Surface type
- 2 Enter Surface shape
- 3 Enter Length (cm), Rectangular surfaces and the footprint of an irregular one.
- 4 Enter Width (cm), Rectangular surfaces and the footprint of an irregular one.
- 5 Enter Diameter (cm), Circular surfaces. The tool uses half of this as the radius.
- 6 Enter Shape factor, Irregular surfaces only. 1 is a flat panel, about 0.8 for a textured canvas, lower for deep carving.
- 7 Enter Thickness per coat (mm), A wet coat is often 0.3 to 1 mm. Check the maximum depth per layer on your product data sheet.
- 8 Enter Number of coats
- 9 Enter Waste allowance (%)
- 10 Enter Resin density (g/ml), About 1.05 to 1.2 grams per millilitre for most epoxy products.
- 11 Enter Resin price per millilitre (USD/ml), Optional. Leave at zero to skip the cost figures.
- 12 Press Calculate. You get Resin for one coat, Total resin including waste, Total weight including waste, Resin cost including waste, and every intermediate step stays visible under "How is this calculated?"
- 13 Change one number at a time to see what moves the result, that is usually the most useful thing a calculator can tell you.
Worked examples
Real numbers run through this calculator. Open any example to load it into the form above and change it.
Two coats on a 120 by 60 cm table
A flat rectangular table top, 0.5 mm per coat, two coats, with a 10 percent waste allowance.
You enter
- Surface type
- 1
- Surface shape
- 1
- Length
- 120 cm
- Width
- 60 cm
- Diameter
- 60 cm
- Shape factor
- 1
- Thickness per coat
- 0.50 mm
- Number of coats
- 2
- Waste allowance
- 10%
- Resin density
- 1.10 g/ml
- Resin price per millilitre
- $0.00
You get
- Resin for one coat
- 360.00 ml
- Total resin including waste
- 792.00 ml
- Total weight including waste
- 871.20 g
- Resin cost including waste
- $0.00
About 360 millilitres per coat, 720 for both, and about 792 millilitres once the waste allowance is added, which weighs about 871 grams.
Coating two small round pieces
Two round pieces 15 cm across, coated 0.4 mm thick in three coats.
You enter
- Surface type
- 3
- Surface shape
- 2
- Length
- 120 cm
- Width
- 60 cm
- Diameter
- 15 cm
- Shape factor
- 1
- Thickness per coat
- 0.40 mm
- Number of coats
- 3
- Waste allowance
- 10%
- Resin density
- 1.10 g/ml
- Resin price per millilitre
- $0.00
You get
- Resin for one coat
- 7.07 ml
- Total resin including waste
- 23.33 ml
- Total weight including waste
- 25.66 g
- Resin cost including waste
- $0.00
A 7.5 cm radius gives about 177 square centimetres, so 7.1 millilitres per coat and about 23 millilitres in total with the waste allowance.
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