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Heat Transfer

kJ/(h·m²·K)tokcal/(hr·m²·°C)

Convert kilojoules per hour-square metre-kelvin (kJ/(h·m²·K)) to kilocalories per hour-square metre-Celsius (kcal/(hr·m²·°C)).

Factor1 kJ/(h·m²·K) = 0.2388459 kcal/(hr·m²·°C)

Converter

kJ/(h·m²·K)

Accepts numbers or expressions, e.g. 150 + 14.7

Result
0.238846kcal/(hr·m²·°C)

Rendered to 6 significant figures.

Formula

Formula
kcal/(hr·m²·°C) = kJ/(h·m²·K) × 0.2388459

Multiply any value in kilojoules per hour-square metre-kelvin by 0.2388459 to obtain the value in kilocalories per hour-square metre-Celsius.

Worked example

Convert 1 kJ/(h·m²·K) to kcal/(hr·m²·°C).

  1. 01Start with 1 kJ/(h·m²·K).
  2. 02Multiply by the conversion factor: 1 × 0.2388459 = 0.238846 kcal/(hr·m²·°C).
Result1 kJ/(h·m²·K) = 0.238846 kcal/(hr·m²·°C)

Conversion table

kJ/(h·m²·K)kcal/(hr·m²·°C)
10.23885
20.47769
51.1942
102.3885
204.7769
5011.942
10023.885
20047.769
500119.42
1000238.85

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from kJ/(h·m²·K) to kcal/(hr·m²·°C)?
1 kJ/(h·m²·K) equals 0.2388459 kcal/(hr·m²·°C). To convert, multiply the value in kilojoules per hour-square metre-kelvin by 0.2388459.
How do I convert 1 kJ/(h·m²·K) to kcal/(hr·m²·°C)?
1 kJ/(h·m²·K) = 0.238846 kcal/(hr·m²·°C). For any value, multiply by 0.2388459.
How do I convert kcal/(hr·m²·°C) back to kJ/(h·m²·K)?
Divide by the same factor — or equivalently, multiply by 4.1868. So 1 kcal/(hr·m²·°C) = 4.1868 kJ/(h·m²·K).
When would I need to convert kilojoule per hour-square metre-kelvin to kilocalorie per hour-square metre-Celsius?
Heat-transfer coefficient conversions between kJ/(h·m²·K) and kcal/(hr·m²·°C) are needed in heat-exchanger sizing, boiler and condenser design, and HVAC calculations. W/(m²·K) is standard in SI engineering, and BTU/(hr·ft²·°F) is common in US heat-exchanger correlations and vendor literature.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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