How much paint do I need?

Compare coatings for your project

Use your estimate to compare product details, available colors, and gallon prices, or ask about a bulk order.

How the Paint Calculator Works

The boat-hull option approximates area from length, beam, freeboard, and a hull-type planning factor. This does not measure the actual curves or features of your boat and does not specify an underwater coating system. Check the approximation against the surfaces you intend to paint.

Boat deck, pool, dock, and metal projects use the total measured area you enter. Add all faces being coated before applying the coat count and waste allowance. A pool's water volume or footprint alone does not describe its full painted surface.

Quantity equals surface area × coats × (1 + waste allowance ÷ 100), divided by the displayed catalog coverage in square feet per gallon. The result is rounded up to gallon containers. Coverage and default inputs are planning assumptions; confirm the current technical sheet, film thickness, system compatibility, and actual conditions before purchasing. Calculate primer and finish layers separately.

Tips for Accurate Estimates

• Measure the surfaces being coated. Include both hull sides and the transom, or every relevant pool, deck, dock, or metal face. Do not rely on advertised boat length or pool water volume alone.
• Confirm coverage at the required film thickness. Theoretical coverage and practical spreading rates differ. Roughness, porosity, application method, and losses affect the amount needed.
• Choose coat count from the product instructions. The calculator's default is not an application recommendation. Follow the specified film build and drying schedule.
• Keep primer and finish quantities separate. Each layer can have its own coverage, coat count, and preparation requirements. Confirm compatibility before choosing a complete system.

Frequently Asked Questions