Wallpaper Calculator
Find the number of wallpaper rolls needed for a room or feature wall, allowing for pattern repeat.
Add the widths of every wall
0 for plain paper
Your result
Rolls needed
6 rolls
Drops (strips) needed
24
Drops per roll
4
Why rolls are counted by drops
A roll is cut into full-height strips called drops. The number of drops you get from each roll depends on the wall height plus the pattern repeat, and any leftover shorter than a full drop is usually wasted. That is why counting drops is more accurate than dividing wall area by roll area.
US double rolls are typically 20.5 in × 33 ft; standard UK and European rolls are 53 cm × 10.05 m. Check the label for your exact size.
Frequently asked questions
Related calculators
Paint Calculator
Work out how much paint you need for a room, including multiple coats and deductions for doors and windows.
Plasterboard & Drywall Calculator
Find how many plasterboard (drywall) sheets you need for walls or a ceiling.
Tile Calculator
Calculate how many tiles you need for a floor, wall or splashback, including a cutting and breakage allowance.