Paint Area Calculator

Calculate wall area with opening deductions and required paint quantities — free construction estimation tool

Room Dimensions

Length (m)

Width (m)

Height (m)

Openings

Number of Windows

Window Width (m)

Window Height (m)

Number of Doors

Door Width (m)

Door Height (m)

Paint Settings

Number of Coats

Coverage (m²/L)

Calculation Results

Gross Wall Area

43.2

m²

Opening Area

4.2

m²

Paintable Area

39.0

m²

Paint Required

7.8

L (2 coats)

Item	Value
Total Window Area	2.40 m²
Total Door Area	1.80 m²
Paint per Coat	3.9 L

Per-Wall Breakdown

Wall	Gross Area	Openings	Net Area
Long Wall 1	12.00 m²	1.20 m²	10.80 m²
Long Wall 2	12.00 m²	1.20 m²	10.80 m²
Short Wall 1	9.60 m²	0.90 m²	8.70 m²
Short Wall 2	9.60 m²	0.90 m²	8.70 m²
Total	43.20 m²	4.20 m²	39.00 m²