Skip to content

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

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

Favorite
RSI (metric R-value)
3.35 RSI (m²·K/W)

19.03 R (ft²·°F·h/BTU) = 3.35 RSI (m²·K/W)

Also equals

How it works

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

One R-value (US) is about 5.67826334 RSI (metric R-value), so multiplying by 5.67826334 turns R-value (US) into RSI (metric R-value). For example, 13 R (ft²·°F·h/BTU) is about 2.289 RSI (m²·K/W).

  1. Multiply by 5.67826334 19.03 × 5.67826334 = 3.35 RSI (m²·K/W)

Nearby values

R-value (US) RSI (metric R-value) Watts per square meter-kelvin Kilocalories per hour-square meter-degree Celsius
16.03 R (ft²·°F·h/BTU) 2.82 RSI (m²·K/W) 0.35 0.3
17.03 R (ft²·°F·h/BTU) 3 RSI (m²·K/W) 0.33 0.29
18.03 R (ft²·°F·h/BTU) 3.18 RSI (m²·K/W) 0.31 0.27
19.03 R (ft²·°F·h/BTU) 3.35 RSI (m²·K/W) 0.3 0.26
20.03 R (ft²·°F·h/BTU) 3.53 RSI (m²·K/W) 0.28 0.24
21.03 R (ft²·°F·h/BTU) 3.7 RSI (m²·K/W) 0.27 0.23
22.03 R (ft²·°F·h/BTU) 3.88 RSI (m²·K/W) 0.26 0.22

Printed from rocketcalc.io/heat-transfer/r-value-to-rsi/19.03