Convert R-values (US) to Togs
1 r-value (us) = 1.7611018 togs. Multiply the number of r-values (us) by 1.76110183682.
1 ft²·°F·h/BTU = 1.761101837 tog
Multiply the number of r-values (us) by 1.76110183682.
Results are rounded for display. Double-check values for critical work.
Popular thermal resistance (r-value) conversions
R-values (US) to Togs table
| R-values (US) | Togs |
|---|---|
| 1 ft²·°F·h/BTU | 1.7611018 tog |
| 2 ft²·°F·h/BTU | 3.5222037 tog |
| 3 ft²·°F·h/BTU | 5.2833055 tog |
| 4 ft²·°F·h/BTU | 7.0444073 tog |
| 5 ft²·°F·h/BTU | 8.8055092 tog |
| 10 ft²·°F·h/BTU | 17.611018 tog |
| 20 ft²·°F·h/BTU | 35.222037 tog |
| 25 ft²·°F·h/BTU | 44.027546 tog |
| 50 ft²·°F·h/BTU | 88.055092 tog |
| 100 ft²·°F·h/BTU | 176.11018 tog |
| 500 ft²·°F·h/BTU | 880.55092 tog |
| 1000 ft²·°F·h/BTU | 1,761.1018 tog |
R-values (US) to Togs in your head
Multiply by 7, then divide by 4.
That lands within 0.6% of the exact value.
10 ft²·°F·h/BTU → 17.5 tog in your head, 17.611 tog exactly.
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 tog (tog) is a specialist or regional unit of thermal resistance, equal to 0.1 square meter kelvins per watt (rsi).
Going the other way, 1 tog = 0.56782633 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 togs are in a r-value (us)?
- 1 r-value (us) = 1.7611018 togs.
- How do you convert r-values (us) to togs?
- Multiply the number of r-values (us) by 1.76110183682.
- What is 10 ft²·°F·h/BTU in tog?
- 10 ft²·°F·h/BTU = 17.611018 tog.