Estimate paint quantity from surface area, number of coats, coverage rate and waste allowance.
Results are for information and preliminary estimation. For critical technical work, manufacturer data, local codes and qualified professional review take precedence.
Liters needed = area × coats / coverage × (1 + waste fraction). Use the manufacturer coverage specification for the best estimate.
Example: 100 m², two coats and 10 m²/L coverage with 10% waste needs about 22 L.
Renovation estimates are most sensitive to measurements, product coverage and waste allowance. Before ordering, verify the result against the actual m²/L, m²/pack or unit coverage printed on the product.
Multiply room perimeter by ceiling height, then optionally subtract doors and windows.
Yes. Primer can reduce topcoat absorption on new or porous surfaces.
Tell us if a calculation is unclear, incomplete or appears incorrect.