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Paint & Wallpaper Calculators

Wallpaper Calculator

Wallpaper rolls for a room, including pattern repeat, drops per roll and paste.

Enter values

Results update as you type.

Result

Rolls required

11

Buy all rolls from the same batch number — shade varies between production runs.

Drops needed
31
Drops per roll
3
Length per drop
2.72 m
Wall area
43.2 m²
Paste needed
3 packs (5 rolls each)
Wallpaper cost
$330.00

About the Wallpaper Calculator

Wallpaper rolls for a room, including pattern repeat, drops per roll and paste.

Also known as: how many rolls of wallpaper, wallpaper rolls calculator, wallpaper quantity, pattern repeat calculator.

How to use this calculator

  1. Enter wall perimeter, wall height, roll width, roll length and the other fields.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

rolls = drops needed ÷ drops per roll

Worked example

Using the values pre-filled in the calculator above:

  • Wall perimeter = 18 m
  • Wall height = 2.4 m
  • Roll width = 53 cm
  • Roll length = 10.05 m
  • Pattern repeat = 32 cm
  • Doors = 1
  • Windows = 2
  • Price per roll = 30

the calculator returns:

  • Rolls required: 11
  • Drops needed: 31
  • Drops per roll: 3
  • Length per drop: 2.72 m