Renovation Material Calculator
Fast, accurate, and free online Renovation Material Calculator tool that runs directly in your browser.
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Renovation Calculator Pro
A comprehensive tool for calculating material requirements and costs in your renovation project.
Screed and Concrete
Volume + Weight + CostTiles and Glaze
Quantity + Glue + WastePainting Walls
Paint + PrimerPaint parameters
Skirting boards
Perimeter + CornersRate this tool:
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Webp.PL renovation materials calculator
One tool, four modes: tiles, paint and primer, m² per m³ and strips. Counts rectangular and hexagonal formats, takes into account the joint, arrangement pattern, losses and openings in the walls. You can send the result for printing or export it to CSV.
Run the calculator How it works
What can you count in this tool
1. Tiles - rectangle, hexagon, mosaic
- Support for 3 shapes:rect60x60,hexedge in cm,mosaicsheet in m².
- Joint in mm added to the effective dimension or area.
- Stacking patterns:straight, brick 50%, brick 33%with additional losses.
- Automatic plate and pack count based on pieces per pack.
2. Paint and primer - walls and ceiling
- Wall area calculated from the dimensions of the room with an optional ceiling.
- Openings: Number and size of doors and windows subtracted from area.
- Layers and performance separately for primer and paint.
- Recommendation for 10 L, 5 L, 2.5 L cans in optimal combinations.
3. m² to m³ - layer volume
- Quick volume converter for screeds, putties, insulation.
- Result in m³ based on area and thickness in mm.
4. Skirting boards
- Perimeter manually or from the length and width of the room.
- Enter the length of one strip and count the number of pieces and corners.
How to use - step by step instructions
Tiles
- Enter the area in m² and choose the shape: rectangle, hexagon or mosaic.
- For the rectangle, enterlength i widthof the tile in cm. For a hexagon, enteredgein cm. For a mosaic, entersheet areain m².
- Set the joint in mm and the laying pattern. Select the percentage of losses and items in the package.
- Click Calculate - you will see the number of tiles and packages.
Paint and primer
- Enter the length, width and height of the room. Mark the ceiling if you are painting.
- Enter the number of doors and windows with dimensions in meters, format
width x heighte.g.0.9x2.0. - Set layers and efficiency of primer and paint in m² per liter.
- Click Calculate - the tool will provide liters and suggested can layouts.
m² per m³
- Enter the area in m² and the thickness in mm.
- Click Calculate - you will get the volume in m³.
Strips
- Enter the perimeter directly or enter the length and width of the room.
- Determine the length of one strip and the number of corners.
- Click Calculate - you will see the number of strips and accessories.
Formulas and calculation logic
Layer volume
V [m³] = A [m²] × (T [mm] ÷ 1000)Tiles - rectangle
tile_area = (len_cm ÷ 100 + grout_mm ÷ 1000) × (wid_cm ÷ 100 + grout_mm ÷ 1000)
tiles = ceil( A_m2 ÷ tile_area × (1 + waste_pct + pattern_extra) )
pattern_extra: straight 0.00, brick 50% 0.05, brick 33% 0.07
boxes = ceil( tiles ÷ box_pcs )Tiles - hexagon
a_eff_m = a_cm ÷ 100 + (grout_mm ÷ 1000) × 0.2887
tile_area = (3 × √3 ÷ 2) × a_eff_m²Tiles - mosaic
tile_area = sheet_m2
tiles = ceil( A_m2 ÷ tile_area × (1 + waste) )Paint and primer
wall_area = 2 × (L + W) × H - doors_area - windows_area
total_area = wall_area + (include_ceiling ? L × W : 0)
letters = total_area × coats ÷ coverage_m2_per_l
cans: division into 10 L, 5 L, 2.5 L with optimal selectionStrips
perimeter = value || 2 × (L + W)
trims = ceil( perimeter ÷ piece_len_m )Calculation examples
60x60 tiles straight
Area 20 m², joint 2 mm, loss 5%, pack of 4 pcs.
tile_area = (0.6 + 0.002) × (0.6 + 0.002) = 0.362404 m²
tiles = ceil(20 ÷ 0.362404 × 1.05) = 58 pcs.
boxes = ceil(58 ÷ 4) = 15 packagesPainting a room 4.2 × 3.5 × 2.6 m with a ceiling
1 pair of doors 0.9x2.0 m, 1 window 1.2x1.2 m. Primer 1 layer 10 m²/L. Paint 2 layers 12 m²/L.
wall_area = 2 × (4.2 + 3.5) × 2.6 - 1.8 - 1.44 = 37.36 m²
total = 37.36 + 14.7 = 52.06 m²
ground = 52.06 × 1 ÷ 10 = 5.21 L → 1×5 L + 1×2.5 L
paint = 52.06 × 2 ÷ 12 = 8.68 L → 1×5 L + 2×2.5 LWhy is it worth using the Webp.PL version
- Simple operation - four tabs and clear input fields.
- Real tile laying patterns with additional losses added.
- Subtraction of holes and calculation of layers for paint and primer.
- Recommended cans in three capacities for minimal surplus.
- CSV export and ready printout for order documentation.
FAQ - frequently asked questions
How is the joint taken into account for rectangles
The joint in mm is added to each tile dimension after conversion to meters. As a result, the area of a single tile increases and the number of pieces decreases.
Does the brick pattern increase consumption
Yes. We add 5% for a 50% brick and 7% for a 33% brick in relation to the base losses set in the percentage field.
How can capacities are selected
The tool first allocates the largest capacities of 10 L and 5 L, and the rest is filled with 2.5 L to cover the demand with the smallest possible surplus.
Can I save the result
Yes. Print and CSV Export buttons are available. The results are also saved in the tool's history on the website.
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