Verify the inputs
Measure or document each input. If a value is only an estimate, record its source and test a conservative alternative.
Construction/ CALCULATOR
Wallpaper area and roll quantity
Estimate wall area and whole rolls using the product’s effective coverage after pattern matching.
FROM ESTIMATE TO ACTION
Use the result, not just the number.
Keep the calculation traceable
Save the input link or copied result together with the date, units and assumptions. A number without its inputs cannot be checked later.
Confirm the decision
Compare the estimate with the related guide, current product data and requirements that apply at your location before buying or building.
Inputs to verify
- Wall perimeter to cover (m)
- Total the lengths of walls receiving this wallpaper.
- Maximum covered wall height (m)
- Use the required cut height, including intended trimming where appropriate.
- Excluded openings or panels (m²)
- Subtract only large areas that will not consume strips or offcuts.
- Layout and repair allowance (%)
- Pattern repeat, corners and future repairs can increase the allowance.
- Effective coverage per roll (m²/roll)
- Use supplier coverage adjusted for roll width, cut height and pattern repeat—not raw roll area.