Insulation Calculator

Estimate batts, rolls or product-specific blown-in bags.

Your inputs

Project name (optional)

Insulation type

Batts: individual pieces sized for framing cavities

Application

Wall cavities: measure the wall surface and deduct openings

Measurement unitsUS customaryMetric

Quantity basis

Package coverage (ft²)

Example only. Replace with the installed coverage on your product label.

Add non-overlapping rectangular sections. Deduct openings from the section they belong to.

Section 1

Length (ft)

Height / width (ft)

Openings & exclusions

Excluded area (ft²)

Material settings & waste

Waste allowance (%)

Editable planning allowance, not an optimized cutting plan.

Complete the required inputs to calculate. Check material settings for additional fields.

Enter dimensions and check the material settings to calculate.

Use this calculator as a guide. Independently verify all calculations for accuracy before starting your project.

“Measure twice. Cut once”
-- dad