🧻 Wallpaper Calculator: How Many Rolls

Wallpapering a room or feature wall? Count your rolls.

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Fill in the details and click Calculate to see your results.

Formula at a glance

Wallpaper Calculator: Drops — wall length ÷ roll width. Example: 14 m of wall, 2.5 m high, 53 cm × 10 m rolls → Rolls needed: 9 rolls
How the Wallpaper Calculator works: Drops — wall length ÷ roll width

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📘 About the Wallpaper Calculator

Wallpaper goes up in vertical strips (drops). Each drop is the wall height plus about 10 cm (4 in) for trimming, plus the pattern repeat so the design lines up.

Divide the roll length by the drop length to get drops per roll, and the wall length by the roll width to get the number of drops. Standard European rolls are 53 cm × 10.05 m.

🧮 Formula

Drops
wall length ÷ roll width
Rolls
drops ÷ floor(roll length ÷ (height + trim + repeat))

✏️ Worked examples

14 m of wall, 2.5 m high, 53 cm × 10 m rolls

You enter
UnitsMetres & centimetres
Total wall length to paper (ft or m)14
Wall height (ft or m)2.5
Roll width (in or cm)53
Roll length (ft or m)10
Pattern repeat (in or cm)0
You get
Rolls needed9 rolls
Strips (drops)27
Drops per roll3
Wall area376.7 sq ft · 35 m²

9 rolls.

Feature wall 4 m, 64 cm repeat

You enter
UnitsMetres & centimetres
Total wall length to paper (ft or m)4
Wall height (ft or m)2.4
Roll width (in or cm)53
Roll length (ft or m)10
Pattern repeat (in or cm)64
You get
Rolls needed3 rolls
Strips (drops)8
Drops per roll3
Wall area103.3 sq ft · 9.6 m²

3 rolls.

🧭 How to use this calculator

What you enter

  • Units
  • Total wall length to paper (ft or m)
  • Wall height (ft or m)
  • Roll width (in or cm)
  • Roll length (ft or m)
  • Pattern repeat (in or cm)

What you get

  • Rolls needed
  • Strips (drops)
  • Drops per roll
  • Wall area

❓ Frequently asked questions

How many rolls of wallpaper do I need for a room?

A typical 4 × 4 m room with 2.5 m walls needs about 10 standard rolls, before subtracting doors and windows.

What is a pattern repeat?

The vertical distance before the pattern repeats; larger repeats waste more paper.

Should I buy an extra roll?

Yes, and make sure all rolls have the same batch number.

How much wallpaper for a feature wall?

Usually 3–4 rolls for a 4 m wide, 2.4 m high wall.