Wallpaper Calculator
Find how many rolls of wallpaper you need, including pattern repeat.
Enter your values to see the result.
Processing and privacy
Processing varies by tool. Check the instructions for local processing, server requests, external services and any file or request limits before entering sensitive information.
Read the privacy policyHow this calculation works
Understand the method, inputs and limits behind your result.
- Formula
- Drop length = wall height + pattern repeat + 0.1 m. Drops per roll = floor(roll length / drop length). Rolls = round up [(required drops / drops per roll) × (1 + waste/100)].
- Variables
- Units: Feet & inches, Meters & cm
- Total wall length (ft / m)
- Wall height (ft / m)
- Doors
- Windows
- Roll width (in / cm)
- Roll length (ft / m)
- Pattern repeat (in / cm)
- Extra for waste
- Price per roll (optional)
- Units
- Extra for waste: %
- Use the same selected currency for all monetary inputs. Changing the symbol does not convert exchange rates.
- Example
- A room with 48 ft of wall at 8 ft high needs about 11 US rolls (20.5 in × 33 ft) with no pattern repeat.
- Assumptions
- The result follows the selected options and supplied inputs. Displayed values may be rounded; check input precision before using the result.
- Source
- ToolzHive calculation guide and calculator implementation. External reference verification is pending.
- Last reviewed
- Review date not yet recorded.
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Clear instructions
Find steps, examples and limitations below.
Use online
Open the tool in a supported web browser.
Free to use
No sign-up required. Tool-specific limits may apply.
How to use the Wallpaper Calculator
Find how many rolls of wallpaper you need, including pattern repeat.
- 1 Enter the total wall length, height, doors and windows.
- 2 Enter the roll width, length and pattern repeat.
- 3 Read the rolls and strips needed.
Example and practical tips
A room with 48 ft of wall at 8 ft high needs about 11 US rolls (20.5 in × 33 ft) with no pattern repeat.
Frequently asked questions
What is a pattern repeat?
The height after which the pattern repeats; matching it wastes paper on each strip.
Why buy from one batch?
Colors vary slightly between print runs.
Practical guides
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How to Use Wallpaper Calculator
Find how many rolls of wallpaper you need from the wall length and height, roll size and pattern repeat, minus doors and windows, with waste.
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