What is wallpaper rapport?

Repeat is a step in repeating a pattern. Its size is indicated on the packaging. When gluing, the canvases are shifted by the amount of repeat to match the pattern, which increases material consumption.

Do I need to buy wallpaper with a reserve?

Yes, for wallpaper with a pattern, a margin of at least 10-15% is required, since some of the material will be scrapped when adjusting the pattern.

How to find repeat (offset) on a roll?

Look for markings on the label in the form of two arrows or numbers separated by a fraction (for example, 64/32). The first number is the height of the picture, the second is the offset value.

Calculation of wallpaper for a room

Instant calculation of the number of rolls and leftovers

Room dimensions

Length (m)

Width (m)

Ceiling height (m)

Roll parameters

Width (m)

Length (m)

Repeat (pattern selection), cm

Indicate the dimensions of the room and the height of the ceiling
to find out the required number of rolls

You will need:

—

With reserve for defects (+1): -

Room perimeter: -

Total stripes required: -

Stripes are obtained from 1 roll: -

Remaining (trimmings) from 1 roll: -

💡 Windows and doors: the calculation is made along a continuous perimeter. Cutouts for openings are used as a natural reserve for trimming and scrap.

Wallpaper calculation

🎨 Calculation of wallpaper with pattern selection (rapport)

The main mistake when buying wallpaper with a pattern is ignoring the “rapport” (pattern step). If you do not take into account the offset, the pattern on the wall will not match, and you will have to buy new rolls (which may no longer be in the store).

⚠️ Important: A regular calculator calculates the total area, but this tool adds a margin for trimming to join the pattern. This is critical for wallpapers with large flowers, geometry or monograms.

How to use the tool:

Measure the room:Length, width and height of ceilings.
Look at the label:Look for an icon with arrows and numbers (for example, “64/32” or “64/0”). This is rapport and displacement. Enter this data into the calculator.
Take into account windows and doors: You can subtract their area, but professionals advise leaving it “in reserve” in case of mistakes when trimming.

Tips for a perfect renovation

📏 If the wallpaper is without a pattern

For plain coverings or fine chips where joining is not needed, use a standard wallpaper calculator. He will calculate the footage without extra reserves for shifting.

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📦 Check the lot (Lot)

Even if the calculation is correct, always check the lot number on all rolls. Different batches may differ in shade, which will be noticeable on the wall.

🖌️ Alternative to wallpaper

If complex pattern selection seems too costly, consider painting the walls. You can calculate the material consumption using our paint calculator.

Frequently asked questions (FAQ)

🔹 What is rapport and where to find it?

Rapport is the distance through which the pattern on the wallpaper is repeated. It is indicated on the roll label as a number (for example, 64 cm). The greater the repeat, the more scraps will remain.

🔹 Why do you need a 10% margin?

Even with an accurate calculation, a defect in the sticker, damage to the canvas, or an error in the cut is possible. A supply of 1 roll saves you from having to look for the same batch in stores a month later.

🔹 Do you need to subtract windows and doors?

Technically it is possible to save money. But in practice, pieces cut from window openings can rarely be used in other places due to the mismatch of the pattern. We recommend not subtracting openings when calculating wallpaper with large patterns.