Wall covering roll estimator

Wallpaper Calculator

Estimate wallpaper rolls from wall length, wall height, openings, roll coverage, waste, and pattern-repeat allowance. Good for quick room planning before matching the exact product label.

Units

Total wall length (ft)Wall height (ft)Door/window openings (ft²)Waste / trimming (%)Pattern repeat allowance (%)Usable roll coverage (ft²)Cost per roll ($)

Wallpaper rolls

Net wall area

Order area

Rough cost

Wallpaper coverage is product-specific

Pattern repeat, drop match, roll width, usable bolt length, wall condition, trimming, and product defects can change the number of rolls. Use the manufacturer coverage chart for the final order.

Android App

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Wallpaper formula

Gross wall area = wall length × wall height

Net wall area = gross area - openings

Order area = net area × (1 + waste % + repeat allowance %)

Rolls = order area ÷ roll coverage

Sample takeoff

A room with 52 ft of wall length, 8 ft walls, 40 ft² of openings, 56 ft² roll coverage, 10% waste, and 10% repeat allowance needs about eight rolls.A room with 15.6 m of wall length, 2.4 m walls, 3.7 m² of openings, 5.2 m² roll coverage, 10% waste, and 10% repeat allowance needs about eight rolls.

Wallpaper Calculator FAQ

How does this wallpaper calculator work?+

It multiplies measured job dimensions by the coverage, spacing, or package yield you enter, adds waste, then rounds the buy quantity up. The safest roll coverage is the usable coverage printed on the wallpaper label after repeat and match type are known.It multiplies measured job dimensions by the coverage, spacing, or package yield you enter, adds waste, then rounds the buy quantity up. The safest roll coverage is the usable coverage printed on the wallpaper label after repeat and match type are known.

Should I use the default waste value?+

Use the default for a quick planning estimate, then raise it for cuts, odd layouts, breakage, bad access, or product-specific loss.Use the default for a quick planning estimate, then raise it for cuts, odd layouts, breakage, bad access, or product-specific loss.

Is this a bid or code approval?+

No. It is a material planning calculator. Verify product data, local code, structural requirements, electrical requirements, and supplier packaging before ordering or building.No. It is a material planning calculator. Verify product data, local code, structural requirements, electrical requirements, and supplier packaging before ordering or building.