To buy: 0 rolls
Disclaimer: This calculator provides preliminary (informational) estimates. We are not responsible for any excess or shortage of building materials. Always verify the final calculation with a seller or a professional installer.
ℹ️ Important: Enter the floor area or wall dimensions, and get the calculated number of rolls needed, including a margin for trimming. Carefully read the instructions on how to correctly use this calculator.

How to correctly calculate the amount of wallpaper?

Making a mistake with the number of rolls means either overpaying for excess material or frantically searching for a missing roll from the same batch (which are usually running out) while the renovation is in full swing. The pasted wallpaper is already drying, but a piece of a bare wall is not very pleasing. So, this calculator uses two methods, read more...:

? Pros of each method:
  • Fast "By area" method: Ideal for preliminary budget estimation. Includes a safe margin of 10-15%.
  • Precise "By perimeter" method: Takes into account the ceiling height and pattern match/repeat (rapport). Suitable for final purchasing.

What is a pattern repeat (rapport) and why is it important?

The pattern repeat is the distance before the design repeats itself on the wallpaper. If you chose plain wallpaper (free match / no pattern), the repeat is zero, and you don't need to worry about it. But if the wallpaper has a complex geometric or floral pattern, each new strip will have to be shifted up or down to match the design, which might also require aligning, trimming, and so on.

A standard pattern repeat ranges from 32 to 64 cm (approx. 12.5 to 25 inches). This means that up to a meter (or 3 feet) of material from each roll can go to waste. This calculator in the "Precise - by perimeter" mode calculates this overexpenditure.

❓ Question: Should I subtract windows and doors from the wall area?
Most often — no. The space above windows and doors is still wallpapered, and the offcuts are used for hard-to-reach places (behind radiators, above baseboards, near the ceiling, or where mistakes were made during cutting). The only exception is panoramic floor-to-ceiling windows. In standard homes, windows and doors serve as a natural margin for errors during renovation.