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Planning estimate only. Surface texture, primer, and paint brand affect real usage.
Room 1
Paintable wall area
34.7 m²
Paint needed
6.94 L
Cans (rounded up)
2
Subtracts standard door and window openings from gross wall area.
Gross wall area (2×height×perimeter) minus standard door and window openings per room.
Switch units for dimensions; results show m²/L or ft²/gal with optional can count.
Up to 10 rooms; totals combine all paintable wall area.