Wallpaper Calculator
Find how many wallpaper rolls you need for a room's wall area.
Inputs
A standard single roll is often sold as ~56 sq ft, but usable coverage after pattern-matching waste is commonly closer to 50 sq ft.
Saved Scenarios
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Rolls Needed
8
Spark says
How it's calculated
Formula
- Usable\ Coverage
- — Roll coverage after accounting for pattern repeat and trim waste
What is the Wallpaper Calculator?
Wallpaper rolls are sold with a fixed printed area, but usable coverage is lower once you account for pattern matching and trimming — this calculator uses your adjusted usable coverage to avoid under-ordering.
How to use it
- 1 Enter your total wall area (subtract large openings like windows if you like).
- 2 Enter the usable coverage per roll, adjusted for your pattern's repeat.
Worked examples
Limitations
- •Large pattern repeats can significantly reduce usable coverage — check your specific wallpaper's pattern match requirements before ordering.
Frequently asked questions
Should I order extra rolls for a large pattern repeat?
Yes — patterns with a large repeat (over ~20in) can waste significantly more per cut; many installers add an extra roll or two as a buffer, and it's wise to match dye lots.