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 decorators estimate wallpaper requirements for renovation 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 the coverage per roll, then rounded up to the nearest whole number since you can't buy partial rolls.

3. Importance of Accurate Calculation

Details: Proper estimation prevents shortages during installation and minimizes leftover materials.

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 areas. Subtract windows/doors.

Q2: What's standard roll coverage?
A: Most wallpaper rolls cover 25-30 sq ft, but check manufacturer specifications.

Q3: Should I add extra rolls?
A: Yes, add 10-15% extra for pattern matching and mistakes.

Q4: What if my wallpaper has a large pattern?
A: You may need 20-30% more wallpaper to account for pattern matching.

Q5: Does this include ceiling wallpaper?
A: No, calculate ceiling separately if needed.