Insulation Calculator

What it does

Free insulation calculator for homeowners and contractors. Enter your dimensions to instantly calculate how much insulation you need, required thickness, and estimated costs. Covers blown-in, spray foam, fiberglass, cellulose, batt, and roll insulation. Compare materials side by side, see R-value recommendations, and get DIY vs professional cost breakdowns. No signup required.

Calculate exactly how much insulation you need in 30 seconds. Free tool for blown-in, spray foam, batt & roll insulation. Bags, R-value, cost — all instant.

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