Wallpaper Calculator

Typical US single roll: ~56.75 sq ft usable. Check your roll's label.
Worked example result
Room perimeter44.0 ft
Gross wall area352 sq ft
Area incl. pattern waste352.0 sq ft
Rolls to buy7

A 12 × 10 ft room with 8 ft walls has a 44 ft perimeter and 352 sq ft of wall. With a no-repeat paper at 56.75 sq ft usable per roll, you need 7 rolls; a large pattern repeat pushes that to 8.

Wall area = 2(L + W) × H; Adjusted = Area × (1 + repeat waste%); Rolls = ceil(Adjusted ÷ usable coverage per roll) · Powered by CalcHub — Wallpaper Calculator