Batt coverage = (width in x length in) / 144 sq in per sq ft, computed exactly from your stated batt dimensions rather than a rounded constant. R-value per inch: fiberglass R-3.2, cellulose R-3.7, XPS R-5.0, closed-cell spray foam R-6.5, open-cell spray foam R-3.7 (DOE/ASHRAE reference values).
Inputs
Results
Batt coverage = (width in x length in) / 144 sq in per sq ft, computed exactly from your stated batt dimensions rather than a rounded constant. R-value per inch: fiberglass R-3.2, cellulose R-3.7, XPS R-5.0, closed-cell spray foam R-6.5, open-cell spray foam R-3.7 (DOE/ASHRAE reference values).
Over deze tool & werking
Discover how Insulation Calculator executes your workflow locally in your browser with zero server uploads and total privacy.
Insulation Calculator on Neranjan Tools is an ultra-fast, client-side utility crafted to deliver professional-grade processing without the privacy risks or upload delays of traditional cloud services. Whether handling sensitive business contracts, personal photos, or code snippets, you can accomplish your task in seconds.
Unlike conventional web converters that upload your confidential files to remote third-party servers, this tool operates 100% inside your browser's local sandbox using HTML5 Canvas, WebAssembly, and modern JavaScript engines. Your files are loaded into your device's memory, processed instantly by your local CPU and GPU, and saved directly to your disk, ensuring zero data leaks, zero server logging, and immunity to malware execution.
Stap-voor-stap handleiding
Enter Area & Batt Size
Input the area to insulate and your batt dimensions (standard 15 in or 23 in width x 93 in length).
Select Material
Choose fiberglass, cellulose, XPS, or spray foam to load its R-value per inch.
Review Batts & R-Value
View batts needed and the resulting achieved R-value at your installed thickness.
Geen serveropslag
Files never leave your device. Complete immunity from server breaches or data leaks.
Directe prestaties
Immediate processing powered by your local device hardware with zero upload wait times.
Alle apparaten ondersteund
Works smoothly on iOS, Android, macOS, Windows, and Linux across all modern browsers.
100% Gratis, voor altijd
No hidden subscriptions, no credit card forms, and unlimited free daily usage.
100% privacygarantie aan clientzijde
Neranjan Tools guarantees that Insulation Calculator processes your data purely in your browser memory. We never store, log, or inspect your files, protecting you fully against virus uploads and data breaches.
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