How this calculator works
Estimate paint required from surface area, coats and product coverage.
paint = area × coats ÷ coverage × (1 + allowance%)
Finishing · Calculator
Estimate paint required from surface area, coats and product coverage.
Estimate paint required from surface area, coats and product coverage.
The calculator uses the following core relationship:
Estimating note: Actual material quantities can vary with site conditions, detailing, product dimensions, installation method, and waste.
A paint calculator helps estimate the amount of paint needed for walls and rooms based on surface area, coats and coverage.
Paint coverage varies depending on surface texture and paint type.
Construction tip: Always verify dimensions, material specifications and project conditions before ordering materials.
Estimate paint required from surface area, coats and product coverage.
The calculator uses inputs such as Paintable area (m²), Number of coats, Coverage (m²/L), Extra allowance (%), and Paint can size (L). Use values from your drawings, measurements, product data, or project specifications.
Use outputs such as Paint required, Cans to buy, and Coated area for estimating and cross-checking. Before purchasing or construction, confirm the dimensions, units, waste factors, supplier packaging, and project specifications.
Continue your estimate with related Construction Calc Lab.