How accurate is this result?

It is a practical planning estimate based on the visible assumptions. Product specifications and real-world conditions can vary.

Can I change the assumptions?

All editable assumptions appear as calculator inputs. Fixed assumptions are listed on the page.

Calculators

Wall Area Calculator

Measure total wall area while allowing for doors and windows.

Answer with the example values

Gross Wall Area: 45 · Paintable Wall Area: 40.3

Formula: Measure total wall area while allowing for doors and windows. The method uses the entered values in consistent units and rounds only the final purchase quantity.

Assumptions: Rectangular room; each door removes 1.9 m² and each window 1.4 m².

Vul je gegevens in en kies Berekenen.

Your answer and the practical quantities behind it will appear here.

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Formule en methode

Measure total wall area while allowing for doors and windows. Bereken wat je nodig hebt, hoeveel je nodig hebt en wat je moet kopen.

Aannames en beperkingen

Rectangular room; each door removes 1.9 m² and each window 1.4 m².

Rekenvoorbeeld