Wallpaper Calculator

Work out how many rolls of wallpaper you need for your room.

Calculate Wallpaper Needed

Add up all wall lengths. Subtract width of doors and large windows.

Check wallpaper label. Plain wallpaper = 0. Pattern repeat adds wastage.

Standard UK wallpaper roll: 10.05 m long × 0.53 m wide (5.33 m² coverage). Pattern repeat reduces usable length per roll. Calculation includes 10% wastage for plain paper, 15% for patterned. Always buy an extra roll for future repairs and batch matching.

How This Calculator Works

UK wallpaper typically comes in standard rolls:

  • Length: 10.05 metres
  • Width: 0.53 metres (53 cm)
  • Coverage: 5.33 m² per roll (before wastage)

Pattern Repeat Explained

Pattern repeat is the distance before the pattern repeats vertically. It's printed on the wallpaper label (e.g. "64 cm repeat").

Why it matters: You must line up patterns across strips. A 64 cm repeat with 2.4 m walls means you'll waste offcuts from each roll.

  • Plain/no pattern: Minimal wastage (10%)
  • Small repeat (under 30 cm): ~12% wastage
  • Large repeat (over 50 cm): ~15-20% wastage

Tips

  • Buy all rolls from the same batch (batch numbers printed on label)
  • Keep one extra roll for future repairs
  • Chimney breasts and bay windows need extra

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