Wallpaper Calculator

Estimate wallpaper rolls with pattern repeat and waste logic.

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Room Size
Length of the room.
Width of the room.
Height of the walls.
Exclusions
Count of standard doors.
Count of standard windows.
Roll Details
Width of roll (in).
Length of roll (ft).
Vertical distance between matching patterns (in).
Requirements

0

rolls

Single Rolls Needed

0

Drops per Roll

0

Total Drops Needed

Pattern Layout
0 Strips • Match Repeat: 18"

Area Details

0sq ft
Total Wall Area

Includes approx 0 sq ft deduction for opennings.

Waste Estimate

0sq ft
Total Waste

Includes pattern matching waste and trimming.

Documentation

How It Works

We calculate full vertical strips (drops) needed to cover the perimeter, ensuring pattern matching alignment.

Total Drops = Perimeter / Roll Width

Drop Length = Wall Height + Repeat + Trim

Drops/Roll = Floor(Roll Length / Drop Length)

Pattern Repeat Tips

  • Random Match: 0" repeat. Least waste.
  • Straight Match: Pattern matches horizontally.
  • Drop Match: Pattern drops diagonally (more waste).
  • Note: We assume standard waste for matching.
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