WallpaperCalculator
Work out how many rolls you need for any room, or make a wallpaper that fits your phone or monitor exactly.
How it works
To estimate wallpaper, measure the distance around the room and the wall height. Divide the roll width into the perimeter to get the number of drops. Then work out how many full drops each roll gives. A standard UK/EU roll is 10.05 m × 0.53 m, so a 2.4 m wall gets 4 drops per roll before you allow for pattern repeat.
Pattern repeat is where most people go wrong. A large repeat or a half-drop match can waste a whole drop per roll, so the calculator includes it. It also covers paste, borders, feature walls and ceilings.
For screens, wallpaper.tools makes solid-colour, gradient, pattern and text wallpapers at the exact resolution of your phone, tablet or monitor. They're generated on your device, so nothing is uploaded.
Tools on the way
Wallpaper roll calculator
Rolls needed for a room, including pattern repeat.
Pattern repeat calculator
Straight and half-drop match waste.
Feature wall calculator
Rolls for a single wall.
Wallpaper paste calculator
How much paste to buy.
Wall area calculator
Square metres or feet, minus doors and windows.
What is my screen resolution?
Your exact screen size, instantly.
Phone wallpaper maker
Made to fit your phone model.
Desktop wallpaper maker
Any resolution, including ultrawide.
Solid colour wallpaper
A plain colour at your screen size.
Gradient wallpaper maker
Smooth two- and three-colour gradients.
Dual monitor splitter
One image split across two screens.
Questions
How many rolls of wallpaper do I need for a room?
A typical 3 m × 4 m room with 2.4 m walls needs about 6 to 7 standard rolls with no pattern, or more with a large repeat. Always buy one extra roll from the same batch.
What size should a phone wallpaper be?
Use your screen's native resolution in pixels. For example, many recent phones are around 1170 × 2532 or 1080 × 2400. The maker fills this in for you.