1. What is a Wallpaper Yardage Calculator with Repeat?

Definition: This calculator estimates the amount of wallpaper needed based on wall dimensions, roll dimensions, and pattern repeat.

Purpose: It helps homeowners and decorators determine how much wallpaper is required for a project, accounting for pattern matching.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Y \) — Yardage of wallpaper needed (yards)
• \( H \) — Height of the wall (yards)
• \( Roll\_H \) — Height of wallpaper roll (yards)
• \( Repeat \) — Pattern repeat distance (yards)
• \( W \) — Width of the wall (yards)
• \( Roll\_W \) — Width of wallpaper roll (yards)

Explanation: The formula calculates how many strips are needed vertically (accounting for pattern repeat) multiplied by how many strips fit horizontally.

3. Importance of Accurate Wallpaper Calculation

Details: Proper calculation prevents over-purchasing (saving money) or under-purchasing (avoiding dye lot mismatches), especially important with patterned wallpaper.

4. Using the Calculator

Tips: Enter all dimensions in yards. For pattern repeat, enter 0 if the wallpaper has no pattern. All dimension values must be > 0 except repeat which can be 0.

5. Frequently Asked Questions (FAQ)

Q1: Why subtract repeat from roll height?
A: The pattern repeat reduces usable roll height because each strip must be aligned with the previous one's pattern.

Q2: How do I convert feet to yards?
A: Divide feet by 3 (1 yard = 3 feet). For example, 8 feet = 2.666 yards.

Q3: What's a typical wallpaper roll size?
A: Standard rolls are about 5 yards long (15 feet) and 0.5 yards wide (18 inches), but check your specific product.

Q4: Should I add extra for mistakes?
A: Yes, consider adding 10-15% to the calculated amount for trimming and pattern matching.

Q5: How does pattern repeat affect yardage?
A: Larger repeats require more wallpaper because more material is wasted when matching patterns.