Wallpaper Calculator
Rolls of wallpaper needed, accounting for pattern repeat.
m
m
m
m
m
Rolls needed
8
Drops needed
31
Drops per roll
4
Drop length
2.4m
ShowHide the working
- 1Drop length = wall height = 2.4 m
- 2Drops per roll = ⌊10 ÷ 2.4⌋ = 4
- 3Drops needed = ⌈16 ÷ 0.53⌉ = 31
- 4Rolls = ⌈31 ÷ 4⌉ = 8
Formula
rolls = ⌈drops needed ÷ drops per roll⌉How it works
Counts wallpaper rolls by the drop, allowing for a pattern repeat that forces each drop to a whole multiple.
Example
16 m of wall at 2.4 m high with plain 10 × 0.53 m rolls needs 8 rolls.
About the Wallpaper Calculator
Rolls of wallpaper needed, accounting for pattern repeat. It sits in the Home & Construction section of NWS Calc, a free collection of calculators that run entirely in your browser. There is no signup, no paywall and no tracking — open the page, enter your numbers, get an answer.
Frequently asked questions
- Is the Wallpaper Calculator free to use?
- Yes. Every calculator on NWS Calc is completely free, with no signup, no usage limits and no ads.
- Does my data leave my device?
- No. The Wallpaper Calculator runs entirely in your browser using JavaScript. Nothing you type is uploaded, logged or stored on a server.
- Can I use the Wallpaper Calculator on my phone?
- Yes. The page is fully responsive and works in any modern mobile or desktop browser — there is nothing to install.
- What else is in Home & Construction?
- Paint, tile, concrete, flooring, lumber and material estimates. You can browse the full Home & Construction category for related calculators.