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Wallpaper roll count

Calculate wallpaper roll count using the values and assumptions you provide.

Calculate wallpaper roll count using the values and assumptions you provide.

Both dots and commas are accepted as decimal separators.

Your inputs stay in your browser. Displayed results are rounded to a maximum of 12 significant digits.

Method and assumptions

Method version 1.0.0 · Updated

Calculate

Formula: Ceiling(total wall area / area per roll)

Calculate wallpaper roll count using the values and assumptions you provide.

wallWidth
Average wall width (m)
wallHeight
Wall height (m)
walls
Number of walls
rollWidth
Roll width (m)
rollLength
Roll length (m)

Results depend on the assumptions entered; verify professional or safety-critical decisions independently.

Calculate with code

These short examples use the same inputs and core calculation as this tool. Adapt validation and formatting to your application.

JavaScript
const wallArea = 32, rollCoverage = 5;
console.log(Math.ceil(wallArea / rollCoverage)); // 7 rolls
TypeScript
const wallArea = 32, rollCoverage = 5;
const rolls: number = Math.ceil(wallArea / rollCoverage);
console.log(rolls); // 7
Python
import math
print(math.ceil(32 / 5))  # 7 rolls
Java
System.out.println(Math.ceil(32.0 / 5)); // 7 rolls
C#
Console.WriteLine(Math.Ceiling(32m / 5)); // 7 rolls