Wallpaper calculator.
Measure your walls, enter the details from the wallpaper label, and get an estimate of how many rolls to order. Each wall is rounded up on its own, because a strip can't turn a corner.
This is an estimating tool, not a guarantee. Results are based only on the numbers you enter and standard installation rules, so they may not be 100% accurate for your room or your paper. Wallcovering Pro is not responsible for orders, costs, or outcomes based on these figures. Please double check every measurement and confirm the final quantity with your installer and the manufacturer's spec before you order.
Step 1
Wallpaper details
Printed on the roll label, the sample back, or the product page. All widths and repeats are in inches.
Leave usable width blank unless the paper has edges that get trimmed off. Trim allowance is the extra length cut at the top and bottom of each strip, usually 4 to 6 inches.
Step 2
Your walls
One row per wall, in feet and inches. Don't subtract doors or windows, a full strip still gets hung there and the leftover pieces are handy for future repairs.
Show the math
Step by step formula
How every number above is worked out
The same calculation written out the way you'd do it on paper. The blanks fill in as you type.
— ÷ — = —
ROUND UP = — strips D. Wall height — inches E. Trim allowance + — inches
Height + Allowance = — inches F. Pattern repeat — inches If there is NO repeat:
Strip length = Height + Allowance = — inches If there IS a repeat:
— ÷ — = —
ROUND UP = — repeats
— × — = — inches per strip
G. Total material Total strips × Strip length
— × — = — total inches
Total inches ÷ 36 = — LINEAR YARDS H. Strips per roll Roll length ÷ Strip length
— ÷ — = —
ROUND DOWN = — strips per roll I. Rolls to order Total strips ÷ Strips per roll
— ÷ — = —
ROUND UP = — rolls
+ 1 spare roll = — ROLLS TO ORDER
1 yd = 36 in · 1 ft = 12 in · ft × 12 = in · in ÷ 36 = yd
What to order
- Strip length
- —
- Strips per roll
- —
- Linear yards ordered
- —
- Linear yards used
- —
- Leftover and waste
- —
- Wall area
- —
Each block is one strip. Striped blocks are partial strips.
Estimate only. Double check your measurements and confirm the quantity with your installer before ordering.