Wallpaper Calculator Guide
Estimate wallpaper rolls from wall area, roll coverage, pattern repeat, and openings.
Measure wall width and height
Measure each wall separately. Multiply width by height for total wall area.
Check roll coverage
Wallpaper roll coverage varies by roll size and pattern repeat. Use the product label.
Account for pattern repeat
Large pattern repeats can increase waste because each strip must align.
Order same lot
Wallpaper shade can vary by print lot, so order enough rolls from the same batch.
FAQ
Do I subtract windows and doors?
For rough estimates, subtract large openings but keep waste for trimming and matching.
Why does pattern repeat matter?
Matching the pattern can require cutting off usable material from each strip.
Should I buy an extra roll?
Buying an extra roll from the same lot helps with mistakes and future repairs.
Next step
Open the calculators and enter your dimensions to estimate materials before you shop.