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Heat Transfer

kJ/(h·m²·K)tocal/(cm²·s·°C)

Convert kilojoules per hour-square metre-kelvin (kJ/(h·m²·K)) to calories per square centimetre-second-Celsius (cal/(cm²·s·°C)).

Factor1 kJ/(h·m²·K) = 6.639048e-6 cal/(cm²·s·°C)

Converter

kJ/(h·m²·K)

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

Result
0.663905cal/(cm²·s·°C)

Rendered to 6 significant figures.

Formula

Formula
cal/(cm²·s·°C) = kJ/(h·m²·K) × 6.639048e-6

Multiply any value in kilojoules per hour-square metre-kelvin by 6.639048e-6 to obtain the value in calories per square centimetre-second-Celsius.

Worked example

Convert 100000 kJ/(h·m²·K) to cal/(cm²·s·°C).

  1. 01Start with 100000 kJ/(h·m²·K).
  2. 02Multiply by the conversion factor: 100000 × 6.639048e-6 = 0.663905 cal/(cm²·s·°C).
Result100000 kJ/(h·m²·K) = 0.663905 cal/(cm²·s·°C)

Conversion table

kJ/(h·m²·K)cal/(cm²·s·°C)
16.639e-6
21.3278e-5
53.3195e-5
106.639e-5
200.00013278
500.00033195
1000.0006639
2000.0013278
5000.0033195
10000.006639

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from kJ/(h·m²·K) to cal/(cm²·s·°C)?
1 kJ/(h·m²·K) equals 6.639048e-6 cal/(cm²·s·°C). To convert, multiply the value in kilojoules per hour-square metre-kelvin by 6.639048e-6.
How do I convert 1 kJ/(h·m²·K) to cal/(cm²·s·°C)?
1 kJ/(h·m²·K) = 6.63905e-6 cal/(cm²·s·°C). For any value, multiply by 6.639048e-6.
How do I convert cal/(cm²·s·°C) back to kJ/(h·m²·K)?
Divide by the same factor — or equivalently, multiply by 150624. So 1 cal/(cm²·s·°C) = 150624 kJ/(h·m²·K).
When would I need to convert kilojoule per hour-square metre-kelvin to calorie per square centimetre-second-Celsius?
Heat-transfer coefficient conversions between kJ/(h·m²·K) and cal/(cm²·s·°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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