Paint Calculator

Created by Gabriela Diaz
Last updated: Jun 28, 2022
The amount of paint required to decorate a room is calculated by adding the areas of the walls and subtracting area for the doors and windows (assuming an average door and window area of 2 m²).
Gabriela Diaz
Room length
ft
Room width
ft
Room height
ft
Room surface area
ft²
Doors
Door height
in
Door width
in
Number of doors
Total doors area
ft²
Windows
Windows height
in
Windows width
in
Number of windows
Total windows area
ft²
Amount of paint
Net room area
ft²
Number of coats
Paint efficiency
ft²
/l
Amount of paint
US gal
Cost per unit
$/
US gal
Total cost
$
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