Wallpaper Calculator

Calculate the required amount of wallpaper, accounting for wall height, window and door areas, as well as pattern specifics.

Roll Length
Roll Width
Perimeter of walls
Height of walls

Rolls needed (pc.):


Wall area (m²): 40.50Read explanation below


What is Wallpaper Quantity and How to Calculate it?

Wallpaper Calculator

Wallpaper quantity refers to the number of wallpaper rolls or units required to cover the walls of a specific room or area. This calculation is vital to ensure you purchase just the right amount of wallpaper, avoiding wastage or shortage.

Calculating the necessary wallpaper amount can seem daunting, but it`s actually straightforward. The main factors include the height of the room, the total perimeter, and the areas of any doorways and windows which are not to be wallpapered. By subtracting the areas you won`t cover from the total wall area, you get a precise number for your wallpaper needs.

Formula: (Room Height x Perimeter) - (Windows + Doors Areas) = Total Wallpaper Area.

How to Use the Wallpaper Quantity Calculator?

Our online calculator is designed to make this task simple and accurate. Here`s a step-by-step guide:

1. Measure the height of the room from the floor to the ceiling.

2. Measure the perimeter of the room. This is the total length of all the walls combined.

3. Measure the area of each window and door. This can be done by multiplying the height by the width of each feature.

4. Enter all these measurements into the corresponding fields on the calculator.

5. Click the "Calculate" button, and voilà! The calculator will provide you with the necessary wallpaper quantity.

6. Always consider buying an extra roll just in case of mistakes or future repairs.

7. Enjoy your newly wallpapered room!

Examples of Wallpaper Quantity Calculations

Let`s dive into some real-life examples to better understand the process:

Example 1: The Tiny Bedroom
Imagine a square bedroom with each wall measuring 3m in length, a height of 2.5m, and one window of 1m x 1.5m. Using our formula: (2.5 x 12) - 1.5 = 28.5 square meters of wallpaper needed. Remember the window`s 1.5 square meter deduction!

Example 2: The Living Room Challenge
A rectangular living room with two walls at 5m, two walls at 7m, a height of 3m, and two windows each measuring 1.5m x 2m. Here`s the fun part: (3 x 24) - 6 = 66 square meters. Those windows took up 6 square meters!

Example 3: The Curious Case of the Half-Wallpapered Office
Ever thought about wallpapering just half a room? Let`s say our office is 4m x 4m, 3m in height. But, you're only wallpapering half the height, with one door of 2m x 0.8m. So, (1.5 x 16) - 1.6 = 22.4 square meters. Who knew half-wallpapering could still require so much?

Nuances in Wallpaper Quantity Calculations

While our calculator simplifies the task, certain factors can influence the accuracy of your calculations:

1. Always account for pattern repeats if your wallpaper has a design. Matching patterns might require additional wallpaper.

2. Rooms with irregular shapes may need special attention when measuring.

3. Wallpaper rolls come in different sizes; ensure you're clear on the dimensions.

4. Textured walls might need more adhesive and potentially more wallpaper.

5. Consider obstructions like fireplaces or built-in shelves.

6. The type of wallpaper (vinyl, fabric, etc.) can influence the amount needed.

7. Always double-check measurements before purchase.

8. Keep in mind the potential for mistakes. An extra roll can be a lifesaver.

9. Remember the trimmings! Edges might need extra attention.

10. If in doubt, consulting with a professional can help.

Frequently Asked Questions about Wallpaper Quantity Calculations

Do I need to account for windows and doors?

Yes, areas occupied by windows and doors should be subtracted from the total as they typically aren`t wallpapered.

What if I make a mistake in measurement?

Always buy an extra roll to account for potential mistakes or future repairs.

Can I return extra wallpaper rolls?

This depends on the store`s return policy. It`s best to check before purchasing.

How do I account for pattern repeats?

If your wallpaper has a pattern, you might need additional rolls to ensure the design aligns correctly on all walls.

Is the calculator suitable for all room shapes?

While our calculator handles typical room shapes, irregularly shaped rooms might require additional considerations or professional consultation.

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