How to calculate wallpaper linear yards
Calculate wall area from room perimeter and wall height, add waste for pattern matching, divide by roll width in feet, then divide by 3 to convert feet to linear yards.
Roll width matters
A 27 inch wallcovering roll covers a different number of linear yards than a 36 inch commercial wallcovering. Always use the actual roll width from the selected product.
When rolls are better than yards
If the supplier sells by single roll or double roll, use a roll-coverage calculator. Linear yards are most useful for wallcovering sold by yardage.
Wallpaper roll example estimates
Examples use 30 sq ft per roll and 15% waste. Pattern repeat can require more.
| Room | Wall area | Rolls |
|---|---|---|
| 10 ft x 12 ft room | 352 sq ft | 14 rolls |
| 12 ft x 12 ft room | 384 sq ft | 15 rolls |
| 12 ft x 16 ft room | 448 sq ft | 18 rolls |
Before you calculate
- Measure each wall or room section separately before combining roll counts.
- Use the actual roll coverage, width, and pattern repeat from the selected product.
- Add extra waste for large pattern repeats, drop matches, stairwells, powder rooms, ceilings, and short wall sections.
Common mistakes
- Using gross roll coverage without checking pattern repeat or usable roll length.
- Subtracting every small opening and then running short on pattern matching.
- Mixing peel-and-stick, pasted wallpaper, murals, and commercial wallcovering in one estimate.
Formula
linear yards = (2 * (length + width) * wallHeight * (1 + wastePercent / 100)) / (rollWidth / 12) / 3
Assumptions
- Linear-yard estimates depend on roll width, pattern repeat, seams, and matching direction.
- Doors and windows are not automatically subtracted.
- Use roll coverage or supplier yardage guidance from the selected wallcovering before ordering.
Example
Estimated wallpaper linear yards needed: 65.4 linear yards
How to use this calculator
- Enter room length in ft.
- Enter room width in ft.
- Enter wall height in ft.
- Enter roll width in in.
- Enter waste in %.
- Review the live estimate and compare it with the example result.
- Check the formula, assumptions, product labels, and site conditions before using the Wallpaper Linear Yards Calculator result to plan materials.
Before you buy materials
- Round up to whole rolls and keep lot or batch numbers consistent.
- Order extra when color matching matters or the pattern may be discontinued.
FAQ
What is the wallpaper linear yards formula?
Linear yards = wall area with waste divided by roll width in feet, then divided by 3.
Does pattern repeat affect wallpaper yardage?
Yes. Pattern repeat, drop match, half drop, seams, and matching direction can increase the yardage needed.
Should I subtract windows and doors?
For a detailed takeoff, subtract large openings. For a quick planning estimate, leaving openings in can help cover waste and matching.
How many linear yards for a 12 ft by 12 ft room with 8 ft walls, 27 in roll width, and 15% waste project?
A project using 12 ft room length, 12 ft room width, 8 ft wall height, 27 in roll width, 15 % waste requires exactly 65.4 linear yards. This includes any waste percentages if applicable.
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This calculator is for planning estimates only. Verify final quantities with product labels, project conditions, and a qualified professional when accuracy matters.