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Wallpaper Calculator
Work out how many rolls of wallpaper a room needs, allowing for the pattern repeat and waste.
Wallpaper calculator
Wall width: — · Strips needed: —
Length per strip: — · Strips per roll: —
Rolls needed: —
—
How to use the Wallpaper Calculator
- Enter the wall area you need to cover and the wall height.
- Set the roll width, the roll length and the pattern repeat.
- Choose a waste allowance and read how many rolls to buy.
Features
- Rolls from area, roll size and repeat
- Strips needed and strips per roll
- Pattern repeat and waste allowance
- Step by step working table
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Frequently Asked Questions
Common questions about the free online wallpaper calculator.
Divide the wall area by the wall height to get the width, work out the strips, then see how
many strips each roll gives.
A large repeat means every strip after the first wastes part of the roll to match the
pattern, which can add several rolls.
Measure the height and the total run of wall, multiply them together, then take off large
windows and doors.
It covers trimming at the top and bottom, mistakes, awkward corners and a spare strip for
later repairs.
European rolls are usually 53 centimetres wide and 10 metres long, which is a little over
five square metres a roll.
Yes. Enter the area of that single wall as the wall area and keep the height the same, and
the strip count follows.
Lining paper smooths the wall and is often used under thin papers, and it is bought by the
same roll calculation.
Buy every roll in one batch with the same batch number, because colours can vary slightly
between print runs.
No. The roll estimate runs in your browser and nothing you type is sent to a server.
Yes. It is completely free, needs no account and there is no limit on how many rooms you
plan.
Last updated: October 10, 2026