How to calculate the area of walls to paint?

Measure the length and width of the room, the height of the walls. Calculate the perimeter: 2 × (Length + Width). Multiply the perimeter by the height. Subtract the area of windows and doors. Add 10% reserve. Example: room 4x5 m, height 2.7 m → perimeter 18 m, area 48.6 m², minus windows and doors 4.5 m² = 44.1 m², with a margin of 48.51 m².

How to calculate the wall area for wallpaper?

The calculation is similar to painting: perimeter × height - openings + margin. For wallpaper, it is important to take into account the repeat (repetition of the pattern) and the method of sticking. Margin for wallpaper with a pattern: 15-20%, without a pattern: 10%. Measure the height from floor to ceiling in several places and use the maximum value.

How to calculate wall area for tiles?

Calculation of area: perimeter × height - openings + margin. For tiles, the margin depends on the size of the tiles and the installation method: straight laying - 10%, diagonal - 15%, complex patterns - 20%. Consider trimming in corners and around openings. For the bathroom, a reserve of 15-20% is recommended.

How to calculate the area of walls with windows and doors?

Calculate the total area of the walls: perimeter × height. Measure the area of each window (width x height) and each door. Add up the areas of all openings. Subtract from total area. Formula: Usable area = (Perimeter × Height) - (Area of all windows + Area of all doors). Add a margin of 10-15%.

How to calculate the area of walls for plaster?

The area of walls for plaster is calculated in the same way: perimeter × height - openings + margin. For plaster, take into account the unevenness of the walls: for smooth walls the margin is 10%, for uneven walls - 15-20%. Include in the calculation the area of the walls below the ceiling and above the floor (if leveling is required).

How to calculate the wall area in an irregularly shaped room?

Break the room into simple geometric shapes (rectangles, triangles). Calculate the perimeter of each part. For corner rooms, use the "3 walls" option. For open spaces - “2 walls”. Add up the areas of all parts. Subtract openings and add headroom.

How to calculate the area of walls for gluing panels?

The calculation is similar to tiles: perimeter × height - openings + margin. For panels, consider their width and mounting method. Vertical panels: margin 10-15%. Horizontal panels with trimming: margin 15-20%. Consider trimming in corners and around openings.

Do I need to take into account the ceiling area when calculating the walls?

No, the ceiling area is calculated separately. Formula: Length × Width. But if the wall decoration extends to the ceiling (for example, wallpaper or panels), consider the transition zone. Usually this is 5-10 cm around the perimeter of the room.

How to calculate the area of walls for decorative plaster?

The area is calculated as standard: perimeter × height - openings + margin. For decorative plaster the margin is 10-15%. Consider the difficulty of application: textured coatings may require a larger margin (up to 20%) due to uneven application.

How to calculate the area of walls to paint in the bathroom?

For the bathroom, measure all the walls. Usually the bathroom has 4 walls, but it can be corner (3 walls). Calculate: perimeter × height - openings + margin 15-20%. There are often no windows in the bathroom, but there is a doorway. Use moisture-resistant paint and consider the difficulty of application.

How to calculate the wall area for finishing a kitchen?

For the kitchen, consider the backsplash (the wall above the work surface) and common walls. Calculate the total area: perimeter × height. Subtract windows and doors. The apron usually has a height of 60-90 cm and is calculated separately. For the kitchen, the margin is 10-15% due to the complexity of the terrain.

How to calculate the area of the corridor walls?

The corridor usually has 2 parallel walls (long sides) or 4 walls (if closed). Measure the length and width of the corridor, height. Calculate the perimeter. If the corridor is open on one side, use the “2 walls” option. Consider all the doors in the hallway. Reserve 10%.

How to calculate the wall area for a children's room?

Standard calculation: perimeter × height - openings + margin. For a children's room, consider the safety of materials (environmentally friendly). Measure all walls, taking into account niches and projections. For bright wallpaper with a pattern, the margin is 15-20% due to the need to match the pattern.

How to calculate the wall area for office decoration?

For an office space, measure the length and width. Offices often have many windows and doors. Calculate: perimeter × height - all openings + 10% margin. Take into account partitions (walls between workstations), they are calculated separately. For standard office ceilings (2.5-3 m), use the maximum height.

How to calculate the area of walls for turnkey painting?

Turnkey means complete finishing of all walls. Measure all walls, including corridors and utility rooms. Calculate each room separately: perimeter × height - openings + margin. Add up all the squares. Turnkey painting margin: 10-15%. Consider the number of layers of paint (usually 2-3).

How to calculate the wall area for wallpaper with rapport?

The area of the walls is calculated as standard: perimeter × height - openings. But for wallpaper with rapport, a larger margin is needed: 15-20% instead of 10%. Rapport is a repeating pattern. The greater the repeat, the more waste there is when sticking. Consider the fit of the pattern in the corners and at the joints.

How to calculate the wall area for painting a balcony?

A balcony usually has 3 walls (two side and one front). Measure the dimensions of each wall separately. Add up the squares. Consider windows (usually large ones). The margin is 15-20% due to the difficulty of application on small surfaces and corners. Consider temperature conditions.

How to calculate the wall area for finishing a bedroom?

Standard bedroom 4x5 m: perimeter 18 m, height 2.7 m → area 48.6 m². Subtract window (2-3 m²) and door (2 m²) = 44-45 m² usable area. With a margin of 10%: 48-50 m² of material. For the bedroom, consider the comfort of materials and environmental friendliness.

How to calculate the wall area for PVC panels?

The calculation is similar to tiles: perimeter × height - openings + margin. For PVC panels, consider their length (usually 2.7 m or 3 m) and width (10-30 cm). The margin depends on the mounting method: horizontally - 15-20%, vertically - 10-15%. Consider trimming in corners.

How to calculate the wall area for drywall?

For drywall, calculate the area of the frame (profiles). Wall area: perimeter × height. Keep in mind that the drywall is mounted on the frame, so take into account the pitch of the profiles (usually 40-60 cm). Area of drywall sheets: walls + 10-15% margin for trimming.

How to calculate the area of walls for painting the facade?

For the facade, measure the perimeter of the building and the height of the walls. Take into account all openings (windows, doors, gates). The margin for facade painting is 15-20% due to difficult working conditions and the need for touch-up painting. Consider the number of layers (usually 2-3 for a facade).

How to calculate the area of the walls for finishing the hallway?

The hallway (corridor) often has 2 or 4 walls. Measure the length and width. If the hallway is open on one side, use “2 walls”. Calculate: perimeter × height - openings (usually only the door) + 10% margin. Consider the narrowness of the space and the need for careful trimming.

How to calculate the wall area for painting a garage?

A garage usually has 4 walls, but may have a gate (one wall is missing). Measure the dimensions of all walls. Consider the gate as an opening. Area: perimeter × height - openings + margin 10-15%. For the garage, use durable paint. Consider the operating conditions.

How to calculate the area of walls for liquid wallpaper?

Liquid wallpaper is applied like plaster. Calculation: perimeter × height - openings + margin 15-20%. Liquid wallpaper requires a larger supply due to the characteristics of application and possible unevenness. Consider the consumption per 1 m² (usually indicated on the packaging) and the number of layers.

How to calculate the wall area for decorating a store?

For a store, measure all the walls of the sales area and utility rooms. Calculate each room separately: perimeter × height - openings + margin of 10-15%. Add up all the squares. Consider storefronts (large openings) and the need for a durable finish. The wear resistance of materials is important for the store.

How to calculate the wall area for painting a basement?

The basement can have different configurations. Measure all walls. Consider humidity and the need for waterproofing. Area: perimeter × height - openings + margin 15-20%. For the basement, use special paints (anti-fungal, moisture-resistant). The height of the basement is usually lower than standard (2-2.5 m).

How to calculate the wall area for finishing the attic?

The attic has a complex shape with sloping walls. Break up walls into simple shapes. For sloped walls, measure the average height or calculate the triangular sections separately. Area: the sum of all sections - openings + margin of 15-20%. Consider the difficulty of application on inclined surfaces.

How to calculate the wall area for painting a pantry?

The pantry is usually a small room. Standard calculation: perimeter × height - openings (usually only the door) + 10% margin. Consider the small size of the pantry and the need to conserve materials. For the pantry, you can use simpler finishing materials.

How to calculate the wall area for restaurant decoration?

For a restaurant, measure all rooms: hall, kitchen, utility rooms. Calculate each separately: perimeter × height - openings + margin 15%. For the hall, take into account the specific requirements (easy cleaning, fire safety). For the kitchen - moisture-resistant materials. Add up the areas of all rooms.

How to calculate the wall area for painting a cafe?

Similar to a restaurant: measure the hall and utility rooms. Perimeter × height - openings + 15% margin. For cafes, wear resistance and easy cleaning of surfaces are important. Consider the specifics of the room (high traffic, humidity). It is recommended to use washable paints.

How to calculate the wall area for finishing a sauna?

For a sauna, measure all the walls of the steam room. Consider high temperature and humidity. Area: perimeter × height - openings + margin 15-20%. Special materials are used for the sauna (wooden paneling, special paints). Consider the need for ventilation.

How to calculate the wall area for painting a loggia balcony?

A loggia is different from a balcony: it is built into the building and has 3 walls (or 4 if closed). Measure all walls. Consider the windows. Area: perimeter × height - openings + margin 15-20%. For the loggia, use frost-resistant materials. Consider insulation.

How to calculate the wall area for finishing a bath?

For a bath, measure the steam room and washing room separately. Steam room: perimeter × height - openings + 20% margin. Washing room: perimeter × height - openings + margin 15-20%. Use moisture-resistant and heat-resistant materials (wooden paneling, special paints). Take into account difficult conditions (high humidity, temperature).

How to calculate the wall area for painting a staircase?

The staircase has a complex configuration. Measure the perimeter on each floor. Consider flights of stairs and landings. Area: perimeter × height - openings (windows, doors) + margin 15%. Wear resistance and easy cleaning are important for a staircase. Use washable paints.

How to calculate the wall area for finishing a gym?

For a gym, measure the perimeter of the large room. Typically, gyms have high ceilings (3-5 m). Area: perimeter × height - openings + margin 10-15%. Consider the requirements for materials (strength, wear resistance). Specialized coverings are used for the gym.

How to calculate the wall area for painting an attic?

The attic has a complex shape with sloping walls. Break it down into simple sections. For sloped walls, measure the average height. Area: the sum of all sections - openings + margin of 15-20%. Consider the difficulty of application on inclined surfaces. Simple materials are usually used for the attic.

How to calculate the wall area for finishing an industrial premises?

For a manufacturing facility, measure a large perimeter. The height is usually higher than standard (3-6 m). Area: perimeter × height - openings (gates, windows) + margin 10-15%. Consider safety requirements (fire resistance, wear resistance). Use specialized industrial paints.

How to calculate the area of walls to paint for wallpapering?

Before wallpapering, the walls are usually primed and painted. Area: perimeter × height - openings + margin 10%. The primer is applied in 1-2 layers, paint for wallpaper - in 1 layer. Consider the consumption of primer and paint per m² (usually indicated on the packaging). The reserve is needed for high-quality surface preparation.

How to calculate the wall area for finishing a studio apartment?

A studio is a large room without partitions. Measure the overall perimeter and height. Consider zoning (there may be partial division). Area: perimeter × height - openings + margin 10-15%. Consider the large area and the need for a uniform finish. Accent walls are often used for studios.

Calculator #1

One site. All calculators.

Wall area calculator

Calculation of wall area for finishing, taking into account openings and margin

м²

Units of measurement

99%

Accuracy of calculations

Wall types