Leave empty or 0 for plain wallpaper
Recommended: 5-10% for plain, 15-20% for patterns
European Standard
53 cm × 10 m (5.3 m²)
American Standard
21" × 33' (57.75 ft²)
Wide Width
70 cm × 10 m (7 m²)
Rolls = Wall Area ÷ Roll Coverage
Wall Area = Length × Height × Number of Walls - Openings
Roll Coverage = Roll Width × Effective Roll Length
Disclaimer
Results are estimates. Actual wallpaper requirements may vary due to pattern matching, wall texture, trimming, and installation technique. Always purchase extra rolls from the same batch to ensure color consistency.
Calculating wallpaper requirements accurately is essential to avoid running short during installation or over-purchasing expensive materials. The calculation involves measuring your wall surfaces, accounting for doors and windows, and factoring in the wallpaper roll dimensions and any pattern repeat that may require additional material for proper alignment.
Unlike paint, wallpaper comes in fixed-size rolls, so you must always round up to the nearest whole roll. Additionally, wallpaper from different production batches may have slight color variations, so it's crucial to order all your rolls at once and keep extras for future repairs.
Pattern repeat is the vertical distance between where the pattern is identical again on the wallpaper. This measurement is crucial because when hanging patterned wallpaper, each strip must be aligned with the previous one, which often means cutting off portions of wallpaper to match the pattern.
Types of Pattern Matches
- Free Match: No pattern matching required - most economical
- Straight Match: Pattern aligns horizontally across strips
- Drop Match: Pattern alignment drops by half the repeat on alternate strips
Do
- • Measure each wall individually
- • Account for pattern repeat waste
- • Order extra rolls from same batch
- • Check roll dimensions carefully
Don't
- • Ignore window/door recesses
- • Mix batches (color may vary)
- • Forget sloped ceilings
- • Underestimate waste