Electrostatic Spray Efficiency Calculator

Compare electrostatic vs conventional spray transfer efficiency to calculate material savings, cost reduction, and VOC emission reduction.

Inputs

Surface area (m²)

Target DFT (µm)

Volume solids (%)

Conventional TE (%)

Electrostatic TE (%)

Paint cost ($/L)

Tab to move between fields

Results

Paint saved (L)

99.26

Cost saved ($)

$1,488.97

≈ 11 pairs of sneakers

Conventional paint (L)187.5

Electrostatic paint (L)88.24

Savings (%)52.9

Overspray reduction (L)99.26

VOC reduction (kg)29.78

How to Use This Calculator

Enter spray gun transfer efficiency (%) for the selected application method (conventional, HVLP, airless, electrostatic).
Enter total coating volume to apply (liters) and solids content (%) of the paint.
Read actual coating needed (liters) after accounting for overspray loss.
Compare transfer efficiency across spray methods — electrostatic typically achieves 85-95% vs. 25-45% for conventional.
Use efficiency data to calculate material cost savings and VOC emission reductions from switching methods.

How the result changes with Conventional TE (%)

Conventional TE (%)	Paint saved (L)	Cost saved ($)
19	306.5	$4,597.52
42	90.34	$1,355.04
69	20.46	$306.91
91	-5.82	-$87.27

What each input means

Surface area (m²): Total surface area to paint in square meters.
Target DFT (µm): Dry film thickness target in microns.
Volume solids (%): Percentage of wet film remaining after drying (from TDS).
Conventional TE (%): Transfer efficiency of current method. Airless ~35–45%, HVLP ~65%.
Electrostatic TE (%): Transfer efficiency of electrostatic system. Typically 75–95%.
Paint cost ($/L): Cost per liter of ready-to-spray paint.

What each result means

Conventional paint (L): Paint volume needed with conventional spray.
Electrostatic paint (L): Paint volume needed with electrostatic spray.
Paint saved (L): Liters of paint saved by switching to electrostatic.
Cost saved ($): Dollar savings from reduced paint consumption.
Savings (%): Percentage reduction in paint usage.
Overspray reduction (L): Reduction in waste paint (overspray) volume.
VOC reduction (kg): Estimated VOC emission reduction (based on 300 g/L solvent-borne paint).

How this is calculated

Worked example, using the default values

Identify Input Parameters
4 parameters
Surface area (m²) = 500, Target DFT (µm) = 75, Volume solids (%) = 50, Conventional TE (%) = 40 = 6 input(s) provided
Calculate Paint saved
Paint saved = conventionalVolume - electrostaticVolume
99.26 = 99.26
Calculate Cost saved
Cost saved = volumeSaved * paintCostPerLiter
1488.97 = $1,488.97
Calculate Conventional paint
Conventional paint = theoreticalVolume / (conventionalTE / 100)
187.5 = 187.5
Calculate Electrostatic paint
Electrostatic paint = theoreticalVolume / (electrostaticTE / 100)
88.24 = 88.24

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