Wallpaper Calculator
Calculate how many rolls of wallpaper you need for a room. Accounts for windows, doors, roll dimensions, and includes a spare roll recommendation.
How to Use the Wallpaper Calculator
- Enter the dimensions of the area or structure (length, width, height).
- Specify material parameters if prompted (thickness, overlap, etc.).
- Review the calculated material quantity and coverage area.
- Use the results to plan your purchase and budget.
クイックリファレンス
| 変換元 | 変換先 |
|---|---|
| Paint (1 coat) | ~0.15 L/m² |
| Tile 30×30 cm | ~11 pcs/m² |
| Wallpaper roll | ~5.3 m² coverage |
| Laminate | +10% waste allowance |
| Cement (screed) | ~20 kg/m² (5 cm) |
| Bricks | ~50 pcs/m² wall |
使用例
- •Estimating the quantity of materials needed before purchasing.
- •Planning renovation budgets with accurate material calculations.
- •Reducing waste by computing exact material requirements.
- •Comparing costs between different material options for a project.
計算式
Perimeter = 2 × (Length + Width). Wall area = Perimeter × Height − Windows × Window area − Doors × Door area. Strips per roll = floor(Roll length / Height). Strips needed = ceil(Perimeter / Roll width). Rolls = ceil(Strips needed / Strips per roll).
よくある質問
How do I measure a room for wallpaper?
Measure the length and width of the room in meters, and the ceiling height. Count the number of windows and doors, and note their approximate areas.
Why add an extra roll?
Pattern matching, cutting waste, and future repairs may require extra wallpaper. One spare roll is a standard recommendation.
What are standard wallpaper roll sizes?
The most common roll is 0.53 m wide × 10.05 m long. Wide rolls (1.06 m × 10.05 m) are also popular and cover twice the width per strip.
Should I subtract window and door areas?
Yes. Subtracting window and door areas gives a more accurate wall area, so you don't buy too many rolls.