How to Measure Your Room and Order the Right Amount of Wallpaper

Ordering too little means you run short mid-install. Ordering too much wastes money. This guide walks you through the exact calculation.

What You'll Need

Step 1: Measure Your Walls

Measure the width of each wall to be papered, and the height from skirting board to ceiling. Write these down.

Example room:

Step 2: Calculate Total Drop Length Needed

Standard wallpaper rolls are 10m long and either 52cm or 106cm wide.

For each wall:

For our example (assuming 52cm wide rolls):

Total: 86.4m

Step 3: Account for Pattern Repeat

If your wallpaper has a pattern repeat (shown on the label as e.g. "64cm repeat"), you lose material matching patterns. Add the repeat length to each drop height.

Pattern repeat: 0.64m

New drop length: 2.7 + 0.64 = 3.34m per drop

Total with repeat: 32 drops × 3.34m = 106.9m

Step 4: Divide by Roll Length

106.9 ÷ 10m per roll = 10.7 → order 12 rolls (always round up and add 10% buffer)

Quick Estimate Method

Perimeter × ceiling height ÷ roll coverage.

Most standard rolls cover approximately 5 sq m net. Divide your total wall area by 5 and add 15%.

*Use our Room Calculator for automatic calculations — just enter your room dimensions.*