Calculator
Wallpaper Calculator
Calculate exactly how many wallpaper rolls you need — supports pattern repeat, multiple rooms, and cost estimation.
📏Units
📋Roll Specifications
🏠Room 1
345.0
Wall Area (sq ft)
23
Rolls Needed
23
Rolls (this room)
💰Cost Estimator
📊Project Summary
23
Rolls Needed
24
Recommended (+1 spare)
345
Total Wall Area (sq ft)
💡Pattern Repeat Guide
🎲 Random / No Repeat
No pattern alignment needed. 0% waste. Best for textured or solid wallpapers.
📏 Straight Match
Pattern matches across horizontal seams. Adds ~10% waste. Common for geometric designs.
⬇️ Drop Match
Pattern staggers diagonally. Adds up to 25% waste. Floral and organic prints often use this.
Pro tip: Always buy one extra roll for future repairs. Dye lots vary between production runs — rolls bought later may not match exactly.