Convert rsi (m²·k/w)s to r-value (us)s
1 m²·K/W = 5.67826334111 ft²·°F·h/BTU — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
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Show this value in all 4 r-value & insulance units
- RSI (m²·K/W)s m²·K/W 1
- R-value (US)s ft²·°F·h/BTU 5.678 263 341 11
- Clos clo 6.451 612 903 23
- Togs tog 10
Every row is RSI (m²·K/W) (m²·K/W) converted through the rsi, in exact rational arithmetic.
How to convert rsi (m²·k/w)s to r-value (us)s
Multiply the number of rsi (m²·k/w)s by 5.67826334111 to get r-value (us)s.
R-value (US): The number on US insulation batts. R-13 is RSI 2.29 — divide by 5.678 to go metric.
RSI (m²·K/W) to R-value (US) conversion table
| RSI (m²·K/W)s (m²·K/W) | R-value (US)s (ft²·°F·h/BTU) |
|---|---|
| 1 m²·K/W | 5.678 263 3 |
| 2 m²·K/W | 11.356 527 |
| 3 m²·K/W | 17.034 79 |
| 5 m²·K/W | 28.391 317 |
| 10 m²·K/W | 56.782 633 |
| 20 m²·K/W | 113.565 27 |
| 25 m²·K/W | 141.956 58 |
| 50 m²·K/W | 283.913 17 |
| 100 m²·K/W | 567.826 33 |
| 250 m²·K/W | 1419.5658 |
| 500 m²·K/W | 2839.1317 |
| 1000 m²·K/W | 5678.2633 |
R-value (US) to RSI (m²·K/W) conversion table
| R-value (US)s (ft²·°F·h/BTU) | RSI (m²·K/W)s (m²·K/W) |
|---|---|
| 1 ft²·°F·h/BTU | 0.176 110 18 |
| 2 ft²·°F·h/BTU | 0.352 220 37 |
| 3 ft²·°F·h/BTU | 0.528 330 55 |
| 5 ft²·°F·h/BTU | 0.880 550 92 |
| 10 ft²·°F·h/BTU | 1.761 101 8 |
| 20 ft²·°F·h/BTU | 3.522 203 7 |
| 25 ft²·°F·h/BTU | 4.402 754 6 |
| 50 ft²·°F·h/BTU | 8.805 509 2 |
| 100 ft²·°F·h/BTU | 17.611 018 |
| 250 ft²·°F·h/BTU | 44.027 546 |
| 500 ft²·°F·h/BTU | 88.055 092 |
| 1000 ft²·°F·h/BTU | 176.110 18 |
Frequently asked
How many r-value (us)s are in a rsi (m²·k/w)?
One rsi (m²·k/w) equals 5.678263341 r-value (us)s (m²·K/W → ft²·°F·h/BTU). That figure is exact, not rounded.
How do you convert rsi (m²·k/w)s to r-value (us)s?
Multiply the number of rsi (m²·k/w)s by 5.67826334111 to get r-value (us)s.
What is 1 ft²·°F·h/BTU in rsi (m²·k/w)s?
One r-value (us) is 0.1761101837 rsi (m²·k/w)s.
What is 10 m²·K/W in ft²·°F·h/BTU?
10 m²·K/W = 56.782 633 ft²·°F·h/BTU.
What exactly is a r-value (us)?
The number on US insulation batts. R-13 is RSI 2.29 — divide by 5.678 to go metric.