Convert insulation R-value (imperial) to RSI (metric) and compare batt, rigid foam, and spray foam ratings.Find recommended R-values by climate zone.
Convert between R-value (imperial) and RSI (metric) insulation ratings. Includes common material thicknesses and their R-values.
Copy the code below and paste it into your website or blog. The calculator will work directly on your page.
We use cookies for analytics and ads to improve your experience. Your calculator data stays in your browser, and we never collect it.