How to estimate wallpaper yardage

Measure the room correctly

Measure each wall’s width and height in inches, then convert to feet for calculations. Measure in multiple places—older homes especially can vary. Subtract large openings only when your installer agrees; many pros still order through windows to keep pattern continuity.

List obstacles: mantels, built-ins, and soffits. Note which walls share a continuous pattern around corners. For open plans, treat visible walls as one visual field even if they are technically separate structure.

Understand pattern repeat

Pattern repeat is the vertical distance before the design repeats. Larger repeats require more waste to match at seams. Find repeat on the product page or specs tab for each colorway. Floral and geometric papers in our floral category can have very different repeats under the same brand.

Random textures and many grasscloths may list little or no repeat—waste factors are lower but not zero. Always keep trim waste for corners and mistakes.

Build your roll count

A common approach: compute usable square footage per roll from width and length, divide into total wall area adjusted for waste (often 10–20% for prints, more for large repeats or DIY installs). Confirm roll width—US goods are often 20.5" or 27" wide depending on type.

Round up to the next full increment allowed by the SKU’s order minimum. Do not split orders across dye lots on the same wall without expecting possible shift. When also ordering panels for a feature, complete panel math separately.

Doors, ceilings, and special cases

Tray ceilings and dual-height walls need separate rectangles. Staircases and sloped ceilings require installer templates—do not guess with a single rectangle formula.

If you are wallpapering inside closets or powder rooms, include inside faces in your tally. Small rooms still need waste for tight corners.

Verify before checkout

Cross-check your math against the cart’s unit of measure (yard vs panel). Contact us for trade projects with multiple SKUs—we can sanity-check yardage against mill charts. Pair this guide with room planning and questions on the FAQ page about minimums and lead times.