Wallpaper calculator
Every drop accounted for. Account for pattern repeats, drops and every roll.
Your measurements
How this calculation works
A worked example
A 4 m wall needs 8 drops of 0.53 m paper. At 2.4 m high plus 0.1 m trim, a 0.64 m straight repeat gives a 2.56 m cut. A 10 m roll yields 3 drops, so buy 3 rolls.
Before you buy
Free match uses zero repeat. For half-drop, we add half a repeat to every cut as a conservative allowance; an alternating cutting plan may use less. Calculate each wall separately for conservative corner allowances. Do not subtract small openings: useful offcuts cannot always be reused. Murals and A/B panels need their own layout.
A few useful answers
Why not use roll area?
A roll can have enough total area but too few full-height drops. Cutting length and pattern alignment determine how many usable drops remain.
Are my results saved?
Use Add to project to keep material estimates in your browser. You can copy results or print them at any time. No account or remote project storage is used.
Are the defaults product recommendations?
No. They are transparent example assumptions. Replace coverage, sizes, prices and allowances with your actual product details.