Border Trim and Wallpaper Calculator *

Selecting new wallpapers can be a lot of fun, with more exciting options available than ever before. Wallpaper materials have become highly varied, giving you many more choices beyond the traditional colors and patterns. Exotic fabrics and materials are now available, including raw silk, vinyl, grass and string cloth, and velvet damask, and they can also be fitted with jewels and other embellishments. Some are even specialized for specific needs and environments. Finding wall coverings you love is easy, but determining a budget and staying within it can be complicated and confusing. That's when a wallpaper calculator can help.

If you're not an interior design professional, knowing how much your selected wall coverings will cost you can be difficult. Before starting to calculate, measure all the wall space that you plan to cover. Then measure the borders and trim, which may be along the bottom of walls, near ceilings, around doors and windows, and sometimes across the middle of walls. Enter all the numbers into your wallpaper calculator, and you will have a good idea of how many square feet of wallpaper you will need.

Most wallpaper is priced by the roll, although it's usually packaged and sold in double rolls. Purchase a bit more wallpaper than you think you need so that you don't fall short; remember that with patterned papers that must match at the seams, you may need as much as 25 percent more wallpaper than your initial calculations, in order to ensure that it looks good and lines up properly. When you enter the prices of your chosen wall coverings, trim and borders, the wallpaper calculator will tell you exactly how much you'll be spending, helping you stay within your budget. Using a wallpaper calculator makes measuring, budgeting and purchasing easy, while giving you more time to focus on aesthetics.


Computation Costs:

Single Roll Wallpaper Cost $ Per Roll
Decorative Trim Cost $ Per Roll

Trim Details:

Trim With Decorative Border   

Room Details:

Wall Height    Feet
Room Width    Feet
Room Length    Feet

Calculated Results:

Calculated Area Of Wallpaper Required    Square Feet
Double Rolls Of Wallpaper   
Calculated Expense Of Double Wallpaper Required $
Single Rolls Of Wallpaper   
Calculated Expense Of Single Wallpaper Required $
Calculated Required Length Of Decorative Border Trim    Linear Feet
Rolls Of Decorative Border Trim   
Calculated Expense Of Decorative Trim Required $

Notes:  This is an estimator which enables you to approximate the amount (area) of wallpaper, number of rolls, and optional trim, required for a given room, based on parameters entered. It calculates the square footage of surfaces requiring wallpaper.  We are ignoring the area occupied by doors or windows because the requirements of trimming around windows and doors often requires as much material as the area you are trimming around. Please remember that the calculation is approximate.

If you wish to use decorative trim, check the box. It calculates 1 trim strip; if you wish to use 2 or 3, double or triple the quantity of calculated decorative trim rolls as a result. Decorative trim is assumed to be at the ceiling and therefore is not hampered by doors or windows. The requirement (and subsequent cost) in actual use will change if positioned in the center of the wall or close to the floor because of doors and windows. Trim rolls are about 15 linear feet long.

Enter the cost of the wallpaper per roll (about 27 square feet) and the room dimensions.  The total price and the quantity of wallpaper required is calculated automatically. To do another, click the Clear Values button and then enter a new set of values. You may also wish to just change certain fields and recalculate. Please remember that due to cuts, patterns that need to be matched at cuts, and non-usable ends, wallpaper rolls are generally considered to be between only 85 and 95 percent usable. The smaller the pattern, the less the waste. Trim border rolls follow the same guideline, but are generally considered to have more waste since most people want an entire border without a cut on a wall. Obviously, walls longer than 15 linear feet require a longer roll, if possible, or will require a splice.

When you buy wallpaper or wallcoverings, look for run numbers, lot numbers or run codings on the label or roll. These numbers should be the same on each roll. Wallcoverings are printed in large batches, and the colors can vary perhaps slightly, but nonetheless noticeably, between the batches. To avoid the risk of running out, and to make sure you have extras in case you need to patch an area, you may wish to buy an extra roll. To be sure you have enough wallcovering to cover the room, our calculator rounds up and calculates on the average USABLE quantity on a roll.

Why You Should Use a Wallpaper Calculator


For a lot of families, the first step to figuring out the feasibility of…anything really, is asking how much it costs. When it comes to wall coverings, it can be daunting to figure out what the initial investment should be. That's where a wallpaper calculator comes in very handy. It will help you determine how many rolls you need for your space, how much you can afford to spend per roll, and how much trim or border material will be needed. A wallpaper calculator is a user-oriented tool that let's you put budget and calculations aside so that you are able to concentrate on creating a beautiful space.

The first step involves measuring the room(s) that you intend to decorate. You might be tempted to subtract for windows and doors. However, this is not necessary, nor is it a particularly good idea. When wallpaper is hung, it has to be trimmed around doors and windows, which may require just as much usable wallpaper as a solid wall. Usable Wallpaper generally means eighty-five to ninety-five percent of each roll. When working with patterns that require exact matching, this percentage may be slightly smaller. Expect one roll of wallpaper to be about twenty-seven square feet, and one roll of trim/border to be about fifteen feet long. Remember, this is a guide. The wallpaper calculator will round up, just as you should when budgeting. Always better to have a little extra than to run out.

Using a wallpaper calculator makes it easy to plot out different design concepts without having to stop to compute costs. Perhaps you'd like to wallpaper the ceiling instead of the walls, or maybe just one wall? Maybe you'd like to use solid and patterned wall coverings in one room, and try a photorealistic mural and a fun border in another? A wallpaper calculator lets you compare these costs quickly, leaving you more time and energy for the fun stuff like choosing patterns, themes, and colors.