Wallpaper Calculator

Stop guessing how many rolls of wallpaper you need. Wallpaper Calculator gives you an exact roll count and cost estimate for any wall — straight or sloped — in seconds.

FEATURES
• Straight wall calculations based on width and height
• Sloping wall calculations using high and low points
• Metric and imperial units, including feet and inches
• Pattern repeat and match mode (straight or offset) for patterned wallpaper
• Waste percentage so you don't come up short
• Optional cost estimation
• Calculation history so you can revisit past projects
• English and Swedish

GO PRO
A one-time purchase - no subscription - removes ads and unlocks:
• Custom roll presets for your usual suppliers
• Unlimited calculation history
• Share and export your results

Built for anyone hanging wallpaper - homeowners, decorators, and installers who want the numbers right the first time.

Disclaimer: All results are estimates based on the measurements you enter. Wall shapes, pattern matching, and supplier roll sizes vary, so always double-check your measurements and confirm final quantities with your wallpaper supplier or installer before purchasing. We're not liable for material shortages, overages, or costs resulting from reliance on these calculations.

Recent changes:
Welcome to Wallpaper Calculator! Calculate exactly how many wallpaper rolls you need for straight or sloped walls, in metric or imperial units.