Wallpaper Calculator

Work out exactly how many rolls you need — walls, doors, windows and pattern repeat all accounted for.

How to Use This Calculator

Add each wall — enter the length and height in centimetres for every wall you're papering. Measure each wall separately for the most accurate result.
Add doors and windows — these are deducted automatically from your total paperable area.
Choose your roll size — pick a standard roll or set a custom width and length.
Set the pattern repeat — larger repeats need extra wastage allowance to align the pattern.
Read your results — total rolls needed and paperable area update instantly on the right.

Measure each wall separately for the most accurate result.

Roll Width (cm)

Roll Length (m)

Larger repeats need extra wastage allowance to align the pattern.

Updates instantly as you adjust settings.

Add at least one wall with valid dimensions to see your results.

Rolls to Buy

– rolls

Net Paperable Area

– m²

Usable Area Per Roll

– m²

💡 Includes wastage for the pattern repeat you selected, plus a standard cutting margin.

Use your calculated roll count when placing your order. Save or share your results below.