1. What is a Wallpaper Calculator?

Definition: This calculator determines the number of wallpaper rolls needed based on wall area and roll coverage.

Purpose: It helps homeowners and interior designers accurately estimate wallpaper requirements for projects.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( R \) — Rolls of wallpaper needed (rounded up)
• \( A \) — Total wall area (square feet)
• \( Roll\_A \) — Coverage per roll (square feet)

Explanation: The wall area is divided by roll coverage, then rounded up to the nearest whole number since you can't buy partial rolls.

3. Importance of Accurate Wallpaper Calculation

Details: Proper calculation prevents over-purchasing (saving money) and ensures you have enough material (preventing project delays).

4. Using the Calculator

Tips: Enter the total wall area in square feet and the coverage per roll (default 30 sq ft). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I measure wall area?
A: Multiply wall height by width for each wall, then sum all wall areas. Subtract window/door areas.

Q2: What's standard wallpaper roll coverage?
A: Most rolls cover about 30 sq ft, but check manufacturer specifications as this can vary.

Q3: Should I add extra for pattern matching?
A: Yes, add 10-20% more for pattern repeats and alignment needs.

Q4: What if my walls have many windows/doors?
A: Measure total wall area first, then subtract window/door areas from your calculation.

Q5: Can I use this for different measurement units?
A: The calculator works in square feet. Convert other units to sq ft first (1 sq m = 10.764 sq ft).