Convert Tog to RSI (m²·K/W) (tog to m2 K/W)
1 tog = 0.1 square metre kelvin per watt (m²·K/W). 1 m²·K/W = 10 tog. Example: 15 tog = 15 × 0.1 = 1.5 m²·K/W.
Also searched as tog to m2 K/W, tog in m2 K/W, tog into square metre kelvin per watt, tog in square metre kelvin per watt, tog to square metre kelvin per watt, tog to square metre kelvin per watt converter, tog to square meter kelvin per watt and how many square metre kelvin per watt in a tog.
1 tog = 0.1 m²·K/W
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk tog to RSI converter to paste a column from Excel.
How to Convert Tog to RSI (m²·K/W)
- 1 tog = 0.1 m²·K/W
- 1 m²·K/W = 10 tog
- Example: convert 15 tog to m²·K/W: 15 tog = 15 × 0.1 m²·K/W = 1.5 m²·K/W
Formula
m²·K/W = tog ÷ 10
Derivation from SI units:
- 1 tog = 0.1 m²·K/W.
- Thermal resistance per unit area R = thickness ÷ conductivity, in m²·K/W; U = 1/ΣR.
Both units are defined exactly, so the factor is exact. Tog definition: tog; RSI (m²·K/W) definition: square metre kelvin per watt.
Worked examples
- A reading of 4.5 tog converts to 0.45 m²·K/W.
4.5 tog × 0.1 = 0.45 m²·K/W - A value of 10.5 tog is 1.05 m²·K/W.
10.5 tog × 0.1 = 1.05 m²·K/W
Tog to RSI (m²·K/W) conversion table
| Tog | RSI (m²·K/W) (m²·K/W) |
|---|---|
| 0.5 tog | 0.05 m²·K/W |
| 1 tog | 0.1 m²·K/W |
| 2.5 tog | 0.25 m²·K/W |
| 4.5 tog | 0.45 m²·K/W |
| 7.5 tog | 0.75 m²·K/W |
| 9 tog | 0.9 m²·K/W |
| 10.5 tog | 1.05 m²·K/W |
| 12 tog | 1.2 m²·K/W |
| 13.5 tog | 1.35 m²·K/W |
| 15 tog | 1.5 m²·K/W |
Where it's used
Tog are used for duvet and baby sleeping-bag ratings (BS 5335), while square metre kelvin per watt appear in building envelope design (ECBC, Part L, EN ISO 6946). Both measure thermal resistance per unit area (insulation R-value), so the conversion is a fixed factor.
Tog to other thermal resistance (r-value) units
| Conversion | 1 tog equals |
|---|---|
| tog to RSI | 0.1 m²·K/W |
| tog to R (US) | 0.5678263341 ft²·°F·h/BTU |
| tog to clo | 0.6451612903 clo |
| tog to square metre hour degree Celsius per kilocalorie | 0.1163 m²·h·°C/kcal |
Frequently asked questions
How many square metre kelvin per watt are in 1 tog?
1 tog = 0.1 m²·K/W.
How do I convert tog to square metre kelvin per watt?
Multiply the value in tog by 0.1, or divide it by 10. For example, 15 tog × 0.1 = 1.5 m²·K/W.
Is the tog to m²·K/W conversion exact?
Yes. Both units are defined exactly, and 1 tog is exactly 0.1 m²·K/W.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (derived units with special names).
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Tog to RSI (m²·K/W) (tog to m2 K/W). Retrieved October 29, 2026, from https://scientificconverters.com/thermal-resistance/tog-to-rsi/
IEEE
Scientific Converters, "Convert Tog to RSI (m²·K/W) (tog to m2 K/W)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/thermal-resistance/tog-to-rsi/