# How much antifouling do I need?

Determining how much antifouling you will need is fairly simple. Here are two quick guides to help you purchase the correct amount: 1. Calculate the area needing paint. For a rough estimate of the area to be painted, multiply the length of your hull (LOA) by the beam and multiply by 0.85 (LOA x B x 0.85 = Area). Then divide the area by the coverage of the paint you’ve chosen to determine how many quarts per coat you will need, or 2. Refer to the reference chart below for a quick estimate of how much antifouling paint is required for two coats:

You can use our Paint Estimator to determine how much paint is required. Just enter the type and dimensions of your boat, the product you're using and the number of coats required, and you'll receive a helpful estimate.

# How much paint do I need?

## What type of boat?

Full bodied craft

Fin keeled racing craft

Medium draft racing craft

## What is the underwater area?

Hide Formulations Show Formulations

1 x LWL x (B+D) = Underwater Area (m2)

0.5 x LWL x (B+D) = Underwater Area (m2)

0.75 x LWL x (B+D) = Underwater Area (m2)

Abbreviations
LOA = Length Overall
LWL = Length Waterline
B = Beam
D = Draft
F = Freeboard

## How many coats do you want to apply?

If you put less than the minimum recommended numbers of coats, it may affect the performance of the coating.

To paint a ? x ? x ? ??, with ? coats

You'll need ? litres of

Warning that this tool is an estimator only

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