Skip to content

RSI (metric R-value) to R-value (US)

Convert RSI (metric R-value) to R-value (US), with the math shown step by step.

Favorite
R-value (US)
19.87 R (ft²·°F·h/BTU)

3.5 RSI (m²·K/W) = 19.87 R (ft²·°F·h/BTU)

Also equals

How it works

R (ft²·°F·h/BTU) = RSI (m²·K/W) ÷ 5.67826334

One R-value (US) is about 5.67826334 RSI (metric R-value), so dividing by 5.67826334 turns RSI (metric R-value) into R-value (US). For example, 3.5 RSI (m²·K/W) is about 19.87 R (ft²·°F·h/BTU).

  1. Divide by 5.67826334 3.5 ÷ 5.67826334 = 19.87 R (ft²·°F·h/BTU)

Nearby values

RSI (metric R-value) R-value (US) BTU per hour-square foot-degree Fahrenheit Kilocalories per hour-square meter-degree Celsius
3.2 RSI (m²·K/W) 18.17 R (ft²·°F·h/BTU) 0.06 0.27
3.3 RSI (m²·K/W) 18.74 R (ft²·°F·h/BTU) 0.05 0.26
3.4 RSI (m²·K/W) 19.31 R (ft²·°F·h/BTU) 0.05 0.25
3.5 RSI (m²·K/W) 19.87 R (ft²·°F·h/BTU) 0.05 0.25
3.6 RSI (m²·K/W) 20.44 R (ft²·°F·h/BTU) 0.05 0.24
3.7 RSI (m²·K/W) 21.01 R (ft²·°F·h/BTU) 0.05 0.23
3.8 RSI (m²·K/W) 21.58 R (ft²·°F·h/BTU) 0.05 0.23

Printed from rocketcalc.io/heat-transfer/rsi-to-r-value