Rolls, strips and cost for a room, sized to your pattern repeat.
Estimates are planning aids, not a professional quote. Double-check quantities and product coverage — and any local code or permit requirements — before you buy.
⚠ Order every roll from the same dye lot / run number — printed color can shift subtly between production runs, and a mismatched roll shows immediately on the wall.
⚠ Snap or draw a plumb line for the first strip instead of trusting a corner — almost no wall is perfectly square, and the corner is the first place a pattern mismatch shows.
| Finishing & Sealant | $338–$458 |
| Fasteners & Hardware | $19–$25 |
| Total | $357–$483 |
Excludes tools, delivery, tax and permit fees. Labor not included — this is a DIY materials estimate.
These are affiliate links: we may earn a commission if you buy through them, at no extra cost to you. It never changes what the calculator recommends — the shopping list comes from your dimensions, not from what pays.
About this calculator
Enter your room's length, width and wall height, plus your paper's pattern repeat, and the Wallpaper Calculator works out exactly how many strips your walls need and how many rolls to buy — accounting for the extra length every strip loses lining up a repeating pattern. It nets out doors and windows so you aren't buying paper for openings, and splits straight-match from drop-match repeat math since the two waste pattern differently strip to strip.
Set your roll's width and length (standard American rolls run about 20.5 inches by 33 feet) and pick pre-pasted, peel-and-stick, or paste-the-wall paper, and the takeoff updates instantly — including sizing, adhesive and a seam roller. This is a planning estimate: your paper's actual repeat, dye lot and wall condition all shift the real number, so confirm both against the label before you order.
Step by step
A step-by-step walkthrough to go with your plan above. Follow the product instructions and any local code or permit requirements as you work.
Measure the room and read the pattern repeat and match type off the roll's label, then run the calculator to get your strip and roll count. Buy all rolls from the same dye lot in one order.
Fill and sand any holes or dings, remove switch plates, and wash off dust and grease. Roll on wallpaper primer/sizing and let it dry fully — it's what keeps the paper from bonding directly to old paint or bare drywall.
Measure one roll-width minus an inch from a corner and mark a true vertical line with a level or plumb bob. Corners are rarely square, so the first strip must reference the line, not the corner.
Cut each strip to the calculated length, matching the pattern to the previous strip before you cut. For paste-the-wall paper, paste the wall in one strip-width section instead of the paper.
Position the strip against the plumb line with a slight overlap onto the adjacent wall, then smooth it from the center outward with the smoothing brush to push out air and excess paste.
Align the pattern at the seam before pressing the new strip down, keeping a tight butt joint with no overlap and no gap. Run the seam roller down every joint once it's smoothed.
Press the paper into the ceiling and baseboard line with a straightedge and cut along it with a sharp blade, changing blades often so the cut doesn't tear or drag.
Sponge off excess paste along every seam before it dries, and check the wall in raking light for air bubbles or lifted edges while the paste is still workable.
Equip the job
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Keep planning
Interior & Finishing
Answers
Measure your wall run (the perimeter, minus door and window widths) and your wall height, then figure out how many strips that run requires at your roll's usable width, and how many of those strips fit in one roll's length once your pattern's repeat is subtracted. Rolls needed is strips ÷ strips-per-roll, rounded up — not room area divided by roll area, which undercounts as soon as there's any pattern repeat at all.
The repeat is the vertical distance before a pattern's motif lines up with itself again, printed on the roll's label. Every strip has to be cut a little long so its pattern matches the strip beside it, and that extra length is pure waste — a busy 24-inch repeat can add well over 20% to the paper you buy compared to a repeat-free texture or solid color, even on the same wall.
In a straight match, the pattern lines up straight across from one strip to the next, and each strip loses a full repeat to the alignment. In a drop match, alternate strips are offset by half the repeat, so the waste per strip is roughly cut in half — at the cost of having to track which strip goes where as you hang them. Your paper's label tells you which type it is.
Pre-pasted paper just needs water to activate the adhesive already on the back; peel-and-stick needs nothing but a squeegee. Traditional paste-the-wall paper needs a separate box of paste, mixed fresh. All three benefit from a coat of wallpaper primer/sizing first — it seals the wall so the paper adheres evenly and comes off cleanly if you ever remove it, which plain painted drywall alone doesn't guarantee.
Peel-and-stick is the easiest to hang and the easiest to remove without wall damage, which makes it a good fit for rentals and rooms you'll redo again soon. Traditional pre-pasted and paste-the-wall papers hold up better long-term, come in a far wider range of natural materials like grasscloth, and are the standard choice for a room you expect to keep for years.