Insulation Roll Calculator — Guided Insulation Estimator

Where's it going?

Attic floor or walls — pick one.

Attic floor Laid flat over the ceiling joists Walls Fitted between the studs

Length × width of the space you're insulating.

Length (ft)

Width (ft)

Higher R = better insulation. Match what your climate needs.

R-13 batts Standard for 2×4 walls R-30 rolls Attic floors in mild climates R-38 rolls Attic floors in cold climates

Buy this many rolls

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💡 Pro field tips

🧰 Tools you'll need

Tap to check off as you load up.

Est. project cost (optional)

Price per roll ($)

Labor hours

Labor rate ($/hr)

Save to job log (optional)

File this estimate under a job name or PO to track what to order. Leave blank to file under "General".