Insulation Calculator
Estimate insulation rolls or batts from total area coverage.
Use decimals when needed. Your estimate updates instantly and is safe to tweak before purchasing.
Read the matching guide to avoid common material ordering mistakes.
Insulation Calculator FAQ
How do I choose R-value?
Use local climate guidance and building code requirements for your zone.
Do I include windows and doors?
For rough planning, full wall area is fine. For final purchasing, subtract openings.