Convert togs to r-value (us)s
1 tog = 0.567826334111 ft²·°F·h/BTU — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.567 826 334 111ft²·°F·h/BTU
As a fraction: 52752792631/92903040000
1 tog = 0.567826334111 ft²·°F·h/BTU
How to convert togs to r-value (us)s
Multiply the number of togs by 0.567826334111 to get r-value (us)s.
Tog: Duvet and textile ratings in the UK.
R-value (US): The number on US insulation batts. R-13 is RSI 2.29 — divide by 5.678 to go metric.
Tog to R-value (US) conversion table
| Togs (tog) | R-value (US)s (ft²·°F·h/BTU) |
|---|---|
| 1 tog | 0.567 826 33 |
| 2 tog | 1.135 652 7 |
| 3 tog | 1.703 479 |
| 5 tog | 2.839 131 7 |
| 10 tog | 5.678 263 3 |
| 20 tog | 11.356 527 |
| 25 tog | 14.195 658 |
| 50 tog | 28.391 317 |
| 100 tog | 56.782 633 |
| 250 tog | 141.956 58 |
| 500 tog | 283.913 17 |
| 1000 tog | 567.826 33 |
R-value (US) to Tog conversion table
| R-value (US)s (ft²·°F·h/BTU) | Togs (tog) |
|---|---|
| 1 ft²·°F·h/BTU | 1.761 101 8 |
| 2 ft²·°F·h/BTU | 3.522 203 7 |
| 3 ft²·°F·h/BTU | 5.283 305 5 |
| 5 ft²·°F·h/BTU | 8.805 509 2 |
| 10 ft²·°F·h/BTU | 17.611 018 |
| 20 ft²·°F·h/BTU | 35.222 037 |
| 25 ft²·°F·h/BTU | 44.027 546 |
| 50 ft²·°F·h/BTU | 88.055 092 |
| 100 ft²·°F·h/BTU | 176.110 18 |
| 250 ft²·°F·h/BTU | 440.275 46 |
| 500 ft²·°F·h/BTU | 880.550 92 |
| 1000 ft²·°F·h/BTU | 1761.1018 |
Frequently asked
How many r-value (us)s are in a tog?
One tog equals 0.5678263341 r-value (us)s (tog → ft²·°F·h/BTU). That figure is exact, not rounded.
How do you convert togs to r-value (us)s?
Multiply the number of togs by 0.567826334111 to get r-value (us)s.
What is 1 ft²·°F·h/BTU in togs?
One r-value (us) is 1.761101837 togs.
What is 10 tog in ft²·°F·h/BTU?
10 tog = 5.678 263 3 ft²·°F·h/BTU.
What exactly is a tog?
Duvet and textile ratings in the UK.
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.