Wallpaper Roll Calculator
SPORGAN HOME / THE WALLPAPER STUDIO
Match the pattern.
Plan the rolls.
Turn your wall, roll and pattern measurements into a strip-by-strip estimate before you order.
What this wallpaper estimate includes
The calculator divides each full wall width into whole strips. Free match uses the wall height plus your cutting allowance. Straight match rounds that cut up to the next full pattern repeat. Half-drop adds half a repeat to alternating strips as a conservative planning model. It then suggests how cuts could fit across identical rolls. Do not subtract windows or doors unless the manufacturer or installer confirms those offcuts are reusable. Batch variation, damaged lengths, wall shape, obstacles, seams and installer method can change what you need. Check the roll label’s usable dimensions, match type and repeat, then consider an unopened spare under the seller’s return policy.
A practical plan, made around your measurements
How to use the Wallpaper Roll Calculator
Estimate wallpaper rolls using wall size, roll size, cutting allowance, pattern repeat and match type. Review full strips and print your cut plan.
Your result: Full-height strip counts and a printable cut plan.
- 1
Add each wall and subtract openings where appropriate.
- 2
Enter roll size, trim allowance and pattern repeat.
- 3
Choose the match type, review rolls and print.
Frequently asked questions
Why is pattern repeat important?
Each strip may need extra length so the pattern aligns with the next strip.
Should I buy an extra roll?
Consider dye lots, mistakes and future repairs; the tool reports its calculation without adding a hidden spare roll.