Calculation of the amount of putty for leveling walls
An online putty calculator will help you calculate the required amount of putty to level the walls before painting or wallpapering. The dimensions of the room, the height of the walls, the area of windows and doors, the number of layers, the consumption rate and the margin for losses and adjustment are taken into account.
The putty calculator uses precise formulas to calculate the amount of material based on the type of putty, surface condition, application method and operating conditions. Suitable for calculating various types of putty: starting, finishing, universal, gypsum, cement. Calculation formula: Amount of putty = (Wall area - Opening area) × Consumption rate (kg/m²) × Number of layers × (1 + Stock / 100).
Let's look at practical examples of calculating the amount of putty for various rooms and types of putty:
Standard bedroom with ceiling height 2.7 m, starting and finishing putty
Input data:
Length: 4 m, Width: 3 m, Height: 2.7 m
Window: 1.2×1.5 m
Door: 0.9×2.0 m
Layers: 2
Consumption rate: 1.2 kg/m²
Stock: 10%Calculation:
Wall area: 2 × (4 + 3) × 2.7 = 37.8 m²
Opening area: 1.2×1.5 + 0.9×2.0 = 3.6 m²
Usable area: 37.8 - 3.6 = 34.2 m²
Consumption per layer: 34.2 × 1.2 = 41.04 kg
Consumption per 2 layers: 41.04 × 2 = 82.08 kg
With reserve: 82.08 × 1.1 = 90.29 kg
Packages (25 kg): 90.29 / 25 = 3.61 ≈ 4 packagesResult:
Required: 90.29 kg (4 packs of 25 kg)
Type:
Start + finish
Standard bedroom, it is recommended to take 4-5 packs with a small margin
Large living room with ceiling height 2.7 m, universal putty
Input data:
Length: 5 m, Width: 4 m, Height: 2.7 m
Windows: 2 pieces, 1.5×1.5 m each
Door: 0.9×2.0 m
Layers: 2
Consumption rate: 1.3 kg/m²
Stock: 15%Calculation:
Wall area: 2 × (5 + 4) × 2.7 = 48.6 m²
Opening area: 2×1.5×1.5 + 0.9×2.0 = 6.3 m²
Usable area: 48.6 - 6.3 = 42.3 m²
Consumption per layer: 42.3 × 1.3 = 54.99 kg
Consumption per 2 layers: 54.99 × 2 = 109.98 kg
With reserve: 109.98 × 1.15 = 126.48 kg
Packs (25 kg): 126.48 / 25 = 5.06 ≈ 6 packsResult:
Required: 126.48 kg (6 packs of 25 kg)
Type:
Universal putty
For a large room, an increased margin of 15% is recommended.
Kitchen with a ceiling height of 2.5 m, cement putty for wet rooms
Input data:
Length: 3 m, Width: 2.5 m, Height: 2.5 m
Window: 1.2×1.2 m
Door: 0.8×2.0 m
Layers: 2
Consumption rate: 1.4 kg/m²
Stock: 10%Calculation:
Wall area: 2 × (3 + 2.5) × 2.5 = 27.5 m²
Opening area: 1.2×1.2 + 0.8×2.0 = 3.04 m²
Usable area: 27.5 - 3.04 = 24.46 m²
Consumption per layer: 24.46 × 1.4 = 34.24 kg
Consumption per 2 layers: 34.24 × 2 = 68.48 kg
With reserve: 68.48 × 1.1 = 75.33 kg
Packages (25 kg): 75.33 / 25 = 3.01 ≈ 4 packagesResult:
Required: 75.33 kg (4 packs of 25 kg)
Type:
Cement putty
We recommend moisture-resistant cement putty for the kitchen.
Children's room with ceiling height 2.6 m, gypsum putty
Input data:
Length: 4 m, Width: 3.5 m, Height: 2.6 m
Window: 1.5×1.5 m
Door: 0.9×2.0 m
Layers: 2
Consumption rate: 1.2 kg/m²
Stock: 10%Calculation:
Wall area: 2 × (4 + 3.5) × 2.6 = 39.0 m²
Opening area: 1.5×1.5 + 0.9×2.0 = 4.05 m²
Usable area: 39.0 - 4.05 = 34.95 m²
Consumption per layer: 34.95 × 1.2 = 41.94 kg
Consumption per 2 layers: 41.94 × 2 = 83.88 kg
With reserve: 83.88 × 1.1 = 92.27 kg
Packages (25 kg): 92.27 / 25 = 3.69 ≈ 4 packsResult:
Required: 92.27 kg (4 packs of 25 kg)
Type:
Gypsum putty
Eco-friendly gypsum putty is recommended for children's rooms.
Large ceiling with severe unevenness, starting and finishing putty
Input data:
Length: 6 m, Width: 5 m
Ceiling area: 30 m²
Layers: 3
Consumption rate: 1.5 kg/m²
Stock: 15%Calculation:
Usable area: 30 m²
Consumption per layer: 30 × 1.5 = 45 kg
Consumption per 3 layers: 45 × 3 = 135 kg
With reserve: 135 × 1.15 = 155.25 kg
Packs (25 kg): 155.25 / 25 = 6.21 ≈ 7 packsResult:
Required: 155.25 kg (7 packages of 25 kg)
Type:
Start + finish
Severely uneven ceilings require more layers and increased consumption.
Small bathroom with a ceiling height of 2.5 m, moisture-resistant putty
Input data:
Length: 2 m, Width: 1.5 m, Height: 2.5 m
Door: 0.9×2.0 m
Layers: 2
Consumption rate: 1.3 kg/m²
Stock: 10%Calculation:
Wall area: 2 × (2 + 1.5) × 2.5 = 17.5 m²
Opening area: 0.9×2.0 = 1.8 m²
Usable area: 17.5 - 1.8 = 15.7 m²
Consumption per layer: 15.7 × 1.3 = 20.41 kg
Consumption per 2 layers: 20.41 × 2 = 40.82 kg
With reserve: 40.82 × 1.1 = 44.9 kg
Packages (25 kg): 44.9 / 25 = 1.8 ≈ 2 packagesResult:
Required: 44.9 kg (2 packages of 25 kg)
Type:
Moisture-resistant putty
Bathroom requires moisture-resistant putty
Calculation of putty includes several stages to obtain an accurate result, taking into account all the parameters of the room and the type of putty.
Main types of putty and their characteristics:
1.2-1.5 kg/m²
0.8-1.2 kg/m²
1-1.3 kg/m²
1.2-1.5 kg/m²
Putty consumption depending on the type of surface and putty:
0.8-1 kg/m²
1-1.3 kg/m²
1.3-1.8 kg/m²
1.2-1.5 kg/m²
1-1.3 kg/m²
Using a putty calculator provides many advantages when planning repairs: accurate calculation of the amount of material, saving money, planning purchases, minimizing waste.
The calculator uses proven formulas taking into account all room parameters, type of putty and surface condition to obtain an accurate result.
Correct calculation allows you to avoid excessive consumption of material and unnecessary costs for purchasing unnecessary packages of putty.
Knowing in advance the required amount of putty, you can plan the budget and purchase of materials for repairs.
The simple and intuitive interface of the calculator allows you to quickly calculate the required amount of putty.
To obtain an accurate result, follow our recommendations when calculating the putty.
To calculate the putty, measure the length, width and height of the walls of the room, subtract the area of windows and doors, multiply by the consumption rate (usually 1-1.5 kg/m²), multiply by the number of layers and add a margin of 10-15%. The calculator will automatically perform all calculations.
Putty consumption is usually 1-1.5 kg/m² for starting putty and 0.8-1.2 kg/m² for finishing putty per layer. For very uneven surfaces, the consumption may be higher.
Usually 2 layers are enough: one layer of starting putty and one layer of finishing putty. For very uneven walls, 3-4 layers of starting putty plus a finishing coat may be required.
Starting putty is used to level out significant unevenness (consumption 1.2-1.5 kg/m²). Finishing putty is used for final leveling (consumption 0.8-1.2 kg/m²). Universal putty can be used for both starting and finishing.
For a bedroom, measure the dimensions of the room, indicate the area of windows and doors. Usually 2 layers are enough (starting + finishing). Use a rate of 1.2 kg/m² per layer. Add a margin of 10%.
For the ceiling, measure the ceiling area in square meters. Ceilings usually require more putty due to the difficulty of application. Use a consumption rate of 1.2-1.5 kg/m² per layer. Add a margin of 15%.
For walls, it is recommended to use gypsum or universal putty for dry rooms. For wet rooms (kitchen, bathroom), use cement or polymer moisture-resistant putty.
For the kitchen, use moisture-resistant cement or polymer putty. Measure the area of the walls, subtract the area of windows and doors. Use a consumption rate of 1.3-1.5 kg/m² per layer for wet areas. Add a margin of 10-15%.
A standard package of putty weighs 25 kg. There are also packages of 5 kg, 10 kg and 50 kg. For large volumes, it is more convenient to buy packages of 25 or 50 kg.
For the bathroom, use moisture-resistant cement or polymer putty. Measure the area of the walls, subtract the area of the door. Use a consumption rate of 1.3-1.5 kg/m² per layer. Add a margin of 10%.
Gypsum putty is suitable for dry rooms, easy to sand, consumption 1-1.3 kg/m². Cement putty is moisture-resistant, suitable for wet rooms, consumption 1.3-1.5 kg/m². The quantity calculation for both types is the same.
For the living room, measure the area of the walls, subtract the area of windows and doors. Usually 2 layers are enough (starting + finishing). Use a rate of 1.2 kg/m² per layer. Add a margin of 10%.
Yes, be sure to take all windows and doors into account when calculating the putty. Subtracting the area of the openings from the total area of the walls allows you to obtain the exact usable area for processing and avoid wastage of material.
For a children's room, measure the area of the walls, subtract the area of windows and doors. It is recommended to use environmentally friendly gypsum putty. Use a rate of 1.2 kg/m² per layer. Add a margin of 10%.
Universal putty can be used for both the starting and finishing layers. It is convenient for small jobs. Consumption is 1-1.3 kg/m² per layer. The calculation of the quantity is the same as for conventional putty.
For the corridor, measure the length and width, the height of the ceilings. Consider all the doors in the hallway. Use a rate of 1.2 kg/m² per layer. Add 10-15% margin for adjustment.
For a room with an area of 20 m² (approximately 4x5 m) with a standard ceiling height of 2.7 m, you need approximately 50-70 kg of putty (2-3 packages of 25 kg each) for 2 layers, taking into account a margin of 10%.
For a studio, measure the area of all walls. Consider all windows and doors. Select the type of putty depending on the zoning. For open spaces, use an all-purpose putty. Add a margin of 10-15%.
Polymer putty is a modern type of putty based on polymers. It is elastic, moisture resistant, and easy to apply. Consumption is 1-1.3 kg/m² per layer. The calculation of the quantity is the same as for conventional putty.
For the toilet, measure the area of the walls. Subtract the area of the door. Use moisture-resistant cement or polymer putty. Consider the small area of the room. Use a rate of 1.3 kg/m² per layer. Add a margin of 10%.
For painting, it is recommended to use finishing gypsum or universal putty. It creates a smooth surface, consumption 0.8-1.2 kg/m² per layer. After puttying, be sure to prime the surface before painting.
For an apartment, calculate the area of each room separately. Use different types of putty for different rooms (moisture-resistant for the kitchen and bathroom, gypsum for living rooms). Add up the results for the total number of packages.
Yes, be sure to buy putty with a 10-15% margin for adjustment, defects and possible errors during application. The stock will help to avoid a situation where one package is missing and it is difficult to find exactly the same one in the store.
For the hallway, measure the area of the walls. Consider all doors. Use a wear-resistant putty for high traffic. Use a rate of 1.2 kg/m² per layer. Add 10-15% margin for adjustment.
Latex putty is an elastic polymer putty with the addition of latex. It is very elastic, moisture resistant, and easy to apply. Consumption is 1-1.2 kg/m² per layer. The calculation of the quantity is the same as for conventional putty.
For a house, calculate the area of each room separately. Use different types of putty for different rooms. Add up the results for the total number of packages. Keep in mind that for large rooms it is better to buy putty in bulk.
The drying time of the putty depends on the type and thickness of the layer. Gypsum putty dries in 24-48 hours, cement putty - 48-72 hours, polymer putty - 12-24 hours. Consider drying time when planning your work.
For very uneven walls, increase the number of layers to 3-4, use an increased consumption rate of 1.5-1.8 kg/m² per layer, add a margin of 15-20% to the usual calculation. Consider the need to level out significant unevenness.
Acrylic putty is a universal polymer putty based on acrylic. It is elastic, moisture resistant, suitable for various surfaces. Consumption is 1-1.3 kg/m² per layer. The calculation of the quantity is the same as for conventional putty.
To repair, measure the area of the walls or ceiling that needs to be replastered. Use the application rate depending on the type of putty. Add a margin of 10-15% for adjustment and possible defects.