R-value to U-value conversion calculator
What is R-value? What is U-value? How do I convert R-value to U-value and conversely?
U-value of a window tells you how resistant it is to conductive heat transfer, the lower the number the better. R-value is the insulative value to resist heat flow, the higher the number the better.
R-value to U-value Conversion Calculator provides R & U values.