Convert RSI (m²·K/W) to Clo (m2 K/W to clo)
1 square metre kelvin per watt (m²·K/W) = 6.451612903 clo. 1 clo = 0.155 m²·K/W. Example: 15 m²·K/W = 15 × 6.451612903 = 96.77419355 clo.
Also searched as square metre kelvin per watt to clo, square metre kelvin per watt in clo, square metre kelvin per watt into clo, m2 K/W to clo, m2 K/W in clo, m2 K/W into clo, m2 K/W to clo converter, square meter kelvin per watt to clo and how many clo in a square metre kelvin per watt.
1 m²·K/W = 6.451612903 clo
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk RSI to clo converter to paste a column from Excel.
How to Convert RSI (m²·K/W) to Clo
- 1 m²·K/W = 6.451612903 clo
- 1 clo = 0.155 m²·K/W
- Example: convert 15 m²·K/W to clo: 15 m²·K/W = 15 × 6.451612903 clo = 96.77419355 clo
Formula
clo = m²·K/W × 6.451612903226
Derivation from SI units:
- Thermal resistance per unit area R = thickness ÷ conductivity, in m²·K/W; U = 1/ΣR.
- 1 clo = 0.155 m²·K/W (ISO 7730, ASHRAE 55).
Both units are defined exactly, so the factor is exact. RSI (m²·K/W) definition: square metre kelvin per watt; Clo definition: clo.
Worked examples
- A reading of 1.5 m²·K/W converts to 9.677419355 clo.
1.5 m²·K/W × 6.451612903 = 9.677419355 clo - A value of 3 m²·K/W is 19.35483871 clo.
3 m²·K/W × 6.451612903 = 19.35483871 clo
RSI (m²·K/W) to Clo conversion table
| RSI (m²·K/W) (m²·K/W) | Clo |
|---|---|
| 0.1 m²·K/W | 0.6451612903 clo |
| 0.5 m²·K/W | 3.225806452 clo |
| 1 m²·K/W | 6.451612903 clo |
| 1.5 m²·K/W | 9.677419355 clo |
| 2 m²·K/W | 12.90322581 clo |
| 2.5 m²·K/W | 16.12903226 clo |
| 3 m²·K/W | 19.35483871 clo |
| 4 m²·K/W | 25.80645161 clo |
| 5 m²·K/W | 32.25806452 clo |
| 7 m²·K/W | 45.16129032 clo |
Where it's used
RSI (m²·K/W) are used for building envelope design (ECBC, Part L, EN ISO 6946), while clo appear in thermal comfort (PMV/PPD) in ASHRAE 55 and ISO 7730. Both measure thermal resistance per unit area (insulation R-value), so the conversion is a fixed factor.
RSI (m²·K/W) to other thermal resistance (r-value) units
| Conversion | 1 m²·K/W equals |
|---|---|
| RSI to clo | 6.451612903 clo |
| RSI to R (US) | 5.678263341 ft²·°F·h/BTU |
| RSI to tog | 10 tog |
| RSI to square metre hour degree Celsius per kilocalorie | 1.163 m²·h·°C/kcal |
Frequently asked questions
How many clo are in 1 square metre kelvin per watt?
1 m²·K/W = 6.451612903 clo.
How do I convert square metre kelvin per watt to clo?
Multiply the value in m²·K/W by 6.451612903. For example, 15 m²·K/W × 6.451612903 = 96.77419355 clo.
Is the m²·K/W to clo conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (derived units with special names).
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "clo".
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 RSI (m²·K/W) to Clo (m2 K/W to clo). Retrieved October 29, 2026, from https://scientificconverters.com/thermal-resistance/rsi-to-clo/
IEEE
Scientific Converters, "Convert RSI (m²·K/W) to Clo (m2 K/W to clo)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/thermal-resistance/rsi-to-clo/