Free wallpaper calculator with pattern repeat, roll dimensions, doors, windows, and waste. Find how many wallpaper rolls you need with no signup.
Enter the combined area of large openings. Leave this at zero for a conservative estimate or when partial drops cannot be reused.
Total extra length across the top and bottom.
Covers mistakes, damage, and future repairs.
Recommended amount
Includes 10% extra material. The raw strip count needs 9 rolls before that allowance.
Net wall area
352 sq ft
Combined wall width
44 ft
Adjusted drop length
8 ft 4 in
Drops per roll
3
Roll and strip breakdown
Patterned wallpaper is calculated by usable full drops, not only by the square footage printed on the roll. Half-drop estimates add half of one repeat to each cut for a conservative order amount. Confirm the roll width, roll length, repeat, and batch number on the manufacturer label before purchasing.
Everything runs in your browser. Your measurements are never uploaded or stored.
The Wallpaper Calculator is one of Intellure's free tools for finding how many rolls of wallpaper you need without relying on a rough square-foot estimate. Enter one wall or a whole room in US feet, subtract large doors and windows if appropriate, then choose the roll width, roll length, trim allowance, and extra material percentage. For patterned wallpaper, the calculator adjusts every full drop for a straight or half-drop pattern repeat and shows how many usable drops fit on each roll. It works for accent walls, bedrooms, living rooms, peel-and-stick paper, traditional wallpaper, and custom commercial rolls, with an optional US dollar material cost estimate. Every calculation runs privately in your browser with no signup, uploads, or saved measurements. For wallpaper installers and decorating businesses, Intellure's managed AI employee can answer customer questions, follow up on estimate requests, and book consultations while this free wallpaper roll calculator handles the material planning.
Wallpaper customers ask about measurements, patterns, estimates, and installation dates before they book. Intellure gives your decorating business a managed AI employee on a flexible monthly plan built around your budget that answers those questions, handles sales and marketing, follows up with leads, and books consultations 24/7 across WhatsApp, Instagram, and your website.
See the plans
