Convert R-values (US) to Square Meter Kelvins per Watt (RSI)
1 r-value (us) = 0.17611018 square meter kelvins per watt (rsi). Multiply the number of r-values (us) by 0.176110183682.
1 ft²·°F·h/BTU = 0.1761101837 m²·K/W
Multiply the number of r-values (us) by 0.176110183682.
Results are rounded for display. Double-check values for critical work.
Popular thermal resistance (r-value) conversions
R-values (US) to Square Meter Kelvins per Watt (RSI) table
| R-values (US) | Square Meter Kelvins per Watt (RSI) |
|---|---|
| 1 ft²·°F·h/BTU | 0.17611018 m²·K/W |
| 2 ft²·°F·h/BTU | 0.35222037 m²·K/W |
| 3 ft²·°F·h/BTU | 0.52833055 m²·K/W |
| 4 ft²·°F·h/BTU | 0.70444073 m²·K/W |
| 5 ft²·°F·h/BTU | 0.88055092 m²·K/W |
| 10 ft²·°F·h/BTU | 1.7611018 m²·K/W |
| 20 ft²·°F·h/BTU | 3.5222037 m²·K/W |
| 25 ft²·°F·h/BTU | 4.4027546 m²·K/W |
| 50 ft²·°F·h/BTU | 8.8055092 m²·K/W |
| 100 ft²·°F·h/BTU | 17.611018 m²·K/W |
| 500 ft²·°F·h/BTU | 88.055092 m²·K/W |
| 1000 ft²·°F·h/BTU | 176.11018 m²·K/W |
About these units
The r-value (us) (ft²·°F·h/BTU) is a US customary unit of thermal resistance, equal to 0.17611018 square meter kelvins per watt (rsi).
The square meter kelvin per watt (rsi) (m²·K/W) is an SI base or derived unit of thermal resistance.
Going the other way, 1 square meter kelvin per watt (rsi) = 5.6782633 r-values (us). Thermal insulance, better known as the R-value, measures how well a layer resists heat flow. It is the reciprocal of the U-value. US building products are labelled in ft²·°F·h/BTU, the rest of the world uses m²·K/W (RSI), duvets are sold by tog and clothing is rated in clo. Higher numbers insulate better.
Frequently asked
- How many square meter kelvins per watt (rsi) are in a r-value (us)?
- 1 r-value (us) = 0.17611018 square meter kelvins per watt (rsi).
- How do you convert r-values (us) to square meter kelvins per watt (rsi)?
- Multiply the number of r-values (us) by 0.176110183682.
- What is 10 ft²·°F·h/BTU in m²·K/W?
- 10 ft²·°F·h/BTU = 1.7611018 m²·K/W.