Wallpaper Calculator
Rolls needed using the strip method, so the pattern repeat is accounted for instead of guessed from wall area.
Results
Worked example
Walls totalling 12 m at 2.4 m high, with a 53 cm pattern repeat and a standard 0.53 × 10.05 m roll. Strips = 12 ÷ 0.53 = 23 strips. Each strip is cut at the next full repeat above the height: 5 repeats = 2.65 m, plus 10 cm trimming = 2.75 m. Total = 23 × 2.75 = 63.25 m, which is 7 rolls.
How it works
Strips = total wall length ÷ roll width, rounded up. Strip length = wall height rounded up to a whole number of pattern repeats, plus a 10 cm trimming allowance; for plain paper with no repeat, strip length is height plus 10 cm. Rolls = strips × strip length ÷ roll length, rounded up. A standard roll is 0.53 m by 10.05 m; change the roll fields if yours differs.
FAQ
Should I subtract windows and doors?
This calculator uses gross wall length. Subtracting a large window or door wall can save a roll, but many installers paper full strips and trim around openings. Keep the margin if the pattern match is tricky.
Why does the repeat change the roll count so much?
Every strip must start at the same point in the pattern, so each cut is rounded up to the next repeat. A large repeat on a short wall wastes a strip-length fraction on every drop, and the rolls add up quickly.
Estimates only. Mississippi Maple provides approximate material estimates for planning. Verify quantities with your supplier or installer before purchasing, and order all rolls from the same dye lot.