What is Wallpaper Calculator?

Wallpaper Calculator estimates how many rolls of wallpaper you need to cover a room. Enter your room dimensions, the roll size, and the pattern repeat length, and get an accurate count that accounts for waste and matching.

How to use

1. Step 1 — Enter the room's width, length, and height, plus the number and size of doors and windows.
2. Step 2 — Enter the wallpaper roll width, roll length, and optional pattern repeat distance.
3. Step 3 — View the calculated number of rolls needed, including a waste allowance for cutting and pattern matching.

Result

Your room is 4 m × 5 m with 2.5 m ceilings, one door (0.9 × 2.1 m), and two windows (1.2 × 1.5 m each). With standard 0.53 × 10 m rolls, the calculator says you need 10 rolls.

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