Calculator
Your files never leave your device
Check your Network tab and see
Work starts the moment you drop a file
No daily limit, no sign-up, no watermark
The tool divides the wall area by the area one roll covers, adds a wastage percentage, and rounds up to whole rolls — because you buy rolls, not fractions. Pattern matching increases waste, which the margin accounts for.
Rounding up and buying a little extra matters more with wallpaper than paint: dye lots differ between batches, so a later top-up roll may not match. Order all rolls together.
That is the promise behind every tool here. Files are read in your browser tab, processed there, and discarded when you close it — never uploaded to our servers.
