Wallpaper Calculator
Calculate wallpaper quantity from wall size and roll coverage.
Enter the total wall width to cover (sum of walls) and ceiling height. Standard UK rolls are often ~530 mm × 10 m.
Rolls to buy
7
23 drops needed · 4 drops per roll
Drops needed
23
Drops per roll
4
Exact rolls
5.75
In-depth explanation
Estimate rolls from total wall width, height, and roll size by counting how many drops fit on each roll. Everything runs locally in your browser — your inputs are not uploaded to produce the result.
One vertical strip of wallpaper from ceiling to floor (or skirting). Large repeats waste more paper — increase the wastage percentage or buy an extra roll.
Many UK rolls are about 530 mm wide and 10 m long — defaults use that. Tweak the inputs above to compare options, then copy or note the result you need.
You buy drops, not square metres. Pattern repeat wastes paper because each drop must match. Wider or shorter rolls change how many drops you get per roll — use the dimensions on your pack, not the UK default if you imported paper.
Measure the total wall width including recesses. Ceilings and chimney breasts are extra. Pasting tables and trimming still need a spare roll if the batch might disappear.
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Frequently asked questions
What is a “drop”?
One vertical strip of wallpaper from ceiling to floor (or skirting).
What about pattern matching?
Large repeats waste more paper — increase the wastage percentage or buy an extra roll.
Standard UK roll size?
Many UK rolls are about 530 mm wide and 10 m long — defaults use that.
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