Wallpaper Calculator
Use this wallpaper calculator to estimate wallpaper rolls for a room. Enter wall height, wall width, roll size, pattern repeat and openings and review an estimated roll count and coverage.
Assumes ~5 m² usable per standard roll and ~1.6 m² per opening. Always buy from one dye lot.
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How it works
Rolls = wall area ÷ usable area per roll, with pattern-repeat waste addedHow to use the Wallpaper Calculator
Start by entering wall height, wall width, roll size, pattern repeat and openings. Keep the units consistent and check that each value belongs to the same question.
The result gives an estimated roll count and coverage. Pattern matching and waste can change the number of rolls required. Use it as a guide and check any instructions, rules or professional advice that apply.