Wallpaper Rolls
Calculate full-height strips with repeat-pattern matching.
Your numbers
Rolls needed
Planning estimate from your measurements and assumptions. Confirm dimensions, product coverage and local installation requirements before buying.
Scenario comparison
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Formula
For r = 0, cut length is c = h+t; for r > 0, use c = r ceil((h+t)/r). Rolls are N = ceil[ceil(P/w)/floor(L/c)]. h is wall height, t is trim, r is pattern repeat, P is wall perimeter, w is roll width, and L is roll length, all in m. ceil rounds up and floor rounds down.
Calculate full-height strips with repeat-pattern matching.
Worked example
- Wall perimeter to cover (m)
- 10
- Wall height (m)
- 2.5
- Roll width (m)
- 0.5
- Roll length (m)
- 10
- Pattern repeat (m), zero for none
- 0
- Trim allowance per strip (m)
- 0
- Rolls needed
- 5
- Strips required
- 20
- Usable strips per roll
- 4
- Cut length per strip
- 2.5 m
Scope and limitations
Planning estimate from your measurements and assumptions. Confirm dimensions, product coverage and local installation requirements before buying.
Inputs are checked for missing values and allowed ranges. A result outside the finite numeric range is not displayed. Rounding affects display, while the calculation uses the model’s numeric precision.
Check your units and assumptions before relying on a result. Changing a label does not convert a currency or physical unit.
Formula version: 38456ef79aa1 · Example checked: