Convert Clo to Tog
1 clo = 1.55 tog. 1 tog = 0.6451612903 clo. Example: 1 clo = 1 × 1.55 = 1.55 tog.
Also searched as clo to tog, clo in tog, clo into tog, clo to tog converter and how many tog in a clo.
1 clo = 1.55 tog
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk clo to tog converter to paste a column from Excel.
How to Convert Clo to Tog
- 1 clo = 1.55 tog
- 1 tog = 0.6451612903 clo
- Example: convert 1 clo to tog: 1 clo = 1 × 1.55 tog = 1.55 tog
Formula
tog = clo × 1.55
Derivation from SI units:
- 1 clo = 0.155 m²·K/W (ISO 7730, ASHRAE 55).
- 1 tog = 0.1 m²·K/W.
- 1 clo = 0.155 m²·K/W ÷ 0.1 m²·K/W per tog = 1.55 tog
Both units are defined exactly, so the factor is exact. Clo definition: clo; Tog definition: tog.
Worked examples
- A business suit of 1 clo is 1.55 tog.
1 clo × 1.55 = 1.55 tog - Summer clothing of 0.5 clo is 0.775 tog.
0.5 clo × 1.55 = 0.775 tog
Clo to Tog conversion table
| Clo | Tog |
|---|---|
| 0.3 clo | 0.465 tog |
| 0.5 clo | 0.775 tog |
| 0.6 clo | 0.93 tog |
| 0.7 clo | 1.085 tog |
| 1 clo | 1.55 tog |
| 1.2 clo | 1.86 tog |
| 1.5 clo | 2.325 tog |
| 2 clo | 3.1 tog |
| 3 clo | 4.65 tog |
| 4 clo | 6.2 tog |
Where it's used
Clothing insulation in clo from ASHRAE 55 and ISO 7730 is converted to tog, the UK textile and bedding unit. Multiply by 1.55.
Clo to other thermal resistance (r-value) units
| Conversion | 1 clo equals |
|---|---|
| clo to tog | 1.55 tog |
| clo to RSI | 0.155 m²·K/W |
| clo to R (US) | 0.8801308179 ft²·°F·h/BTU |
| clo to square metre hour degree Celsius per kilocalorie | 0.180265 m²·h·°C/kcal |
Frequently asked questions
How many tog is 1 clo?
1 clo = 1.55 tog, since 1 clo = 0.155 m²·K/W and 1 tog = 0.1 m²·K/W.
How many tog are in 1 clo?
1 clo = 1.55 tog.
How do I convert clo to tog?
Multiply the value in clo by 1.55. For example, 1 clo × 1.55 = 1.55 tog.
Is the clo to tog conversion exact?
Yes. Both units are defined exactly, and 1 clo is exactly 1.55 tog.
Sources
- 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".
- 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 Clo to Tog. Retrieved October 29, 2026, from https://scientificconverters.com/thermal-resistance/clo-to-tog/
IEEE
Scientific Converters, "Convert Clo to Tog," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/thermal-resistance/clo-to-tog/