Estimate wallpaper rolls for a room, including a planning allowance for pattern repeat and waste.
Planning calculator only. Do not rely on this page alone for structural design, permitting, code compliance, engineering signoff, procurement quantities, or contractual commitments.
Wall area + 15% waste for pattern repeat and trimming. Average roll covers 45 sq ft.
Enter job values, review the estimate, then use the decision hints before ordering or quoting.
| length | height | rolls |
|---|---|---|
| 12 | 8 | 5 |
| 20 | 9 | 9 |
Rolls = (Length × Height × 1.15) / 4515% waste covers trimming and pattern matching. Use 25% for large patterns.
One standard roll = 45 sq ft usable
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Yes — but keep 1 extra roll for mistakes and future repairs.