Wallpaper Calculator

When to use?

Use it before ordering wallpaper for a room, feature wall, or renovation project.

How to use

• Enter wall width and height or total area.
• Enter roll size.
• Check roll count with waste.

Input Explanation

Enter wall dimensions, roll width/length, and optional waste allowance.

Calculation Basis

It estimates coverage by roll area and rounds up to whole rolls with margin.

Usage Examples

• Order wallpaper - Estimate rolls before purchase.
• Compare roll sizes - Check how different roll widths affect count.
• Renovation budget - Use roll count for material-cost planning.

Examples

• One 3×2.4 m wall → roll estimate
• Room walls minus openings → total roll count

Cautions

• This is an estimate for everyday planning. Actual results can vary by environment, product specifications, personal condition, and local rules.

Guides

Roll-based purchase

Wallpaper is bought by roll, so estimates are rounded up. Pattern matching and cutting usually require extra material.

Measure openings carefully

Large windows and doors can be subtracted, but keeping some margin helps cover mistakes and repairs.

FAQ

Should I subtract doors and windows?

Subtract large openings if you want a closer estimate.

Why round up?

Wallpaper is purchased by roll and pattern matching creates waste.

Does pattern repeat matter?

Yes, patterned wallpaper often needs extra margin.

Related Tools

• Paint Calculator - Estimate paint amount from wall area, coverage, and number of coats.
• Tile Calculator - Estimate tile count and material cost from area, tile size, and waste rate.
• Curtain Size Calculator - Estimate curtain width and length from window size, fullness, and hanging style.
• Pyeong Area Converter - Convert apartment and office area between pyeong, square meters (m²), and square feet (ft²).
• Fuel Cost Calculator - Estimate fuel cost from driving distance, fuel economy, and fuel price.
• Electricity Bill Calculator - Estimate a monthly electricity bill from power consumption in kWh.