Convert cal/(s·cm·°C) to Watts per Metre Kelvin
1 calorie per second centimetre degree Celsius (cal/(s·cm·°C)) = 418.4 watts per metre kelvin (W/(m·K)). 1 W/(m·K) = 0.002390057361 cal/(s·cm·°C). Example: 15 cal/(s·cm·°C) = 15 × 418.4 = 6276 W/(m·K).
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1 cal/(s·cm·°C) = 418.4 W/(m·K)
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk calorie per second centimetre degree Celsius to watt per metre kelvin converter to paste a column from Excel.
How to Convert cal/(s·cm·°C) to Watt per Metre Kelvin
- 1 cal/(s·cm·°C) = 418.4 W/(m·K)
- 1 W/(m·K) = 0.002390057361 cal/(s·cm·°C)
- Example: convert 15 cal/(s·cm·°C) to W/(m·K): 15 cal/(s·cm·°C) = 15 × 418.4 W/(m·K) = 6276 W/(m·K)
Reference conditions. cal/(s·cm·°C): Thermochemical calorie (4.184 J)
Formula
W/(m·K) = cal/(s·cm·°C) × 418.4
Derivation from SI units:
- 1 cal_th/(s·cm·°C) = 4.184 J ÷ (1 s × 0.01 m × 1 K) = 418.4 W/(m·K) (exact)
- The SI unit of thermal conductivity: heat flow (W) per metre of thickness per kelvin of temperature difference
Both units are defined exactly, so the factor is exact. cal/(s·cm·°C) definition: calorie per second centimetre degree Celsius; Watt per Metre Kelvin definition: watt per metre kelvin.
Worked examples
- A reading of 0.005 cal/(s·cm·°C) converts to 2.092 W/(m·K).
0.005 cal/(s·cm·°C) × 418.4 = 2.092 W/(m·K) - A value of 0.1 cal/(s·cm·°C) is 41.84 W/(m·K).
0.1 cal/(s·cm·°C) × 418.4 = 41.84 W/(m·K)
cal/(s·cm·°C) to Watt per Metre Kelvin conversion table
| cal/(s·cm·°C) | Watts per Metre Kelvin (W/(m·K)) |
|---|---|
| 0.0001 cal/(s·cm·°C) | 0.04184 W/(m·K) |
| 0.0005 cal/(s·cm·°C) | 0.2092 W/(m·K) |
| 0.001 cal/(s·cm·°C) | 0.4184 W/(m·K) |
| 0.005 cal/(s·cm·°C) | 2.092 W/(m·K) |
| 0.01 cal/(s·cm·°C) | 4.184 W/(m·K) |
| 0.05 cal/(s·cm·°C) | 20.92 W/(m·K) |
| 0.1 cal/(s·cm·°C) | 41.84 W/(m·K) |
| 0.5 cal/(s·cm·°C) | 209.2 W/(m·K) |
| 0.9 cal/(s·cm·°C) | 376.56 W/(m·K) |
| 1 cal/(s·cm·°C) | 418.4 W/(m·K) |
Where it's used
cal/(s·cm·°C) are used for older scientific literature, while watts per metre kelvin appear in insulation λ-values (EN 12667, ISO 8301). Both measure thermal conductivity (k, λ), so the conversion is a fixed factor.
cal/(s·cm·°C) to other thermal conductivity units
| Conversion | 1 cal/(s·cm·°C) equals |
|---|---|
| calorie per second centimetre degree Celsius to watt per metre kelvin | 418.4 W/(m·K) |
| calorie per second centimetre degree Celsius to BTU per hour foot degree Fahrenheit | 241.74705 BTU/(h·ft·°F) |
| calorie per second centimetre degree Celsius to BTU inch per hour square foot degree Fahrenheit | 2900.9646 BTU·in/(h·ft²·°F) |
| calorie per second centimetre degree Celsius to milliwatt per metre kelvin | 418400 mW/(m·K) |
| calorie per second centimetre degree Celsius to kilocalorie per hour metre degree Celsius | 359.7592433 kcal/(h·m·°C) |
| calorie per second centimetre degree Celsius to watt per centimetre kelvin | 4.184 W/(cm·K) |
Frequently asked questions
How many watts per metre kelvin are in 1 calorie per second centimetre degree Celsius?
1 cal/(s·cm·°C) = 418.4 W/(m·K).
How do I convert calories per second centimetre degree Celsius to watts per metre kelvin?
Multiply the value in cal/(s·cm·°C) by 418.4. For example, 15 cal/(s·cm·°C) × 418.4 = 6276 W/(m·K).
Is the cal/(s·cm·°C) to W/(m·K) conversion exact?
Yes. Both units are defined exactly, and 1 cal/(s·cm·°C) is exactly 418.4 W/(m·K).
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, "calorie_th per centimeter second degree Celsius [cal_th/(cm · s · °C)]".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4, coherent 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 cal/(s·cm·°C) to Watts per Metre Kelvin. Retrieved October 25, 2026, from https://scientificconverters.com/thermal-conductivity/calories-per-second-centimeter-celsius-to-watts-per-meter-kelvin/
IEEE
Scientific Converters, "Convert cal/(s·cm·°C) to Watts per Metre Kelvin," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/thermal-conductivity/calories-per-second-centimeter-celsius-to-watts-per-meter-kelvin/