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Insulation Calculator

Printed on the package; varies by product and thickness.
Worked example result
Wall area160 sq ft
Stud cavities15
Batts needed (48 in pre-cut)30
Packages needed (by coverage)2

A 20 × 8 ft wall is 160 sq ft with 15 stud cavities at 16 in spacing. Two 48 in batts per cavity means 30 batts, and at 100 sq ft of coverage per package you need 2 packages.

Cavities = ceil(Wall length (in) ÷ stud spacing); Batts = Cavities × ceil(Height (in) ÷ 48); Packages = ceil(Wall area ÷ coverage per package) · Powered by CalcHub — Insulation Calculator