Wallpaper Calculator
Work out how much wallpaper you need. Enter the area to cover and the calculator returns the quantity (allowing for waste) and an indicative cost.
How we estimate this
A standard wallpaper roll covers roughly 5m², but pattern repeat matters, a large repeat wastes more, so allow about 15% extra. Measure the wall area and subtract large openings like doors and windows.
Pricing reviewed: October 2026.
Pricing reviewed October 2026. Indicative Australian costs, not a quote.
Understanding wallpapers in Australia
A standard wallpaper roll covers roughly 5m², but pattern repeat matters, a large repeat wastes more, so allow about 15% extra. Measure the wall area and subtract large openings like doors and windows.
Buy all rolls from the same batch so the colour matches exactly, and keep a spare roll for future repairs.
Frequently asked questions
How many rolls of wallpaper do I need?
Roughly one standard roll per 5m² of wall, plus about 15% extra for pattern matching. Measure the wall area and subtract large openings.
Why do I need extra wallpaper for the pattern?
Patterns have to line up between strips, so each strip wastes some length. A large pattern repeat wastes more, which is why you allow 10 to 15% extra.
Are you a supplier / trades business?
Everyone on this page is working out what wallpaper costs because they are ready to hire. Put your business right beneath the calculator, in your state, so you are who they find. From $50/mo.