Wallpaper Roll Calculator
Estimate wallpaper rolls from wall area and roll coverage.
Calculation example
Inputs: Wall Area: 120 sq ft, Coverage per Roll: 25 sq ft
Result: 5 rolls
120 square units divided by 25 square units per roll requires 5 rolls.
Formula
Rolls needed = wall area รท coverage per roll, rounded up.
How to use this calculator
Divide wall area by the coverage of one roll and round up.
Before you calculate
Measure the project dimensions as accurately as practical and keep all measurements in compatible units. For material products, use the coverage, yield, density, or package size stated by the manufacturer or supplier rather than a generic assumption.
Choose the waste allowance based on the project shape, installation method, cutting requirements, and material characteristics. A simple rectangular estimate may need adjustment for openings, corners, slopes, joints, patterns, compaction, or other site conditions.
Understanding the result
The calculator provides a planning estimate based on the inputs shown above. It is not a substitute for project drawings, structural design, manufacturer instructions, or local requirements. Before ordering, compare the calculated quantity with the supplier's package sizes and ordering units.
Tips
- Use the manufacturer's coverage and pattern information.
- Pattern repeats and waste can increase the required rolls.
Frequently asked questions
How are wallpaper rolls estimated?
Wall area is divided by roll coverage and rounded up.
Can pattern repeats increase the quantity?
Yes. Pattern matching and cutting can increase waste.
Related calculators
Use compatible units and verify estimates against project specifications, local requirements and manufacturer instructions.