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Heat Transfer

W/(m²·K)tokJ/(h·m²·K)

Convert watts per square metre-kelvin (W/(m²·K)) to kilojoules per hour-square metre-kelvin (kJ/(h·m²·K)).

Factor1 W/(m²·K) = 3.6 kJ/(h·m²·K)

Converter

W/(m²·K)

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

Result
3.6kJ/(h·m²·K)

Rendered to 6 significant figures.

Formula

Formula
kJ/(h·m²·K) = W/(m²·K) × 3.6

Multiply any value in watts per square metre-kelvin by 3.6 to obtain the value in kilojoules per hour-square metre-kelvin.

Worked example

Convert 1 W/(m²·K) to kJ/(h·m²·K).

  1. 01Start with 1 W/(m²·K).
  2. 02Multiply by the conversion factor: 1 × 3.6 = 3.6 kJ/(h·m²·K).
Result1 W/(m²·K) = 3.6 kJ/(h·m²·K)

Conversion table

W/(m²·K)kJ/(h·m²·K)
13.6
27.2
518
1036
2072
50180
100360
200720
5001800
10003600

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from W/(m²·K) to kJ/(h·m²·K)?
1 W/(m²·K) equals 3.6 kJ/(h·m²·K). To convert, multiply the value in watts per square metre-kelvin by 3.6.
How do I convert 1 W/(m²·K) to kJ/(h·m²·K)?
1 W/(m²·K) = 3.6 kJ/(h·m²·K). For any value, multiply by 3.6.
How do I convert kJ/(h·m²·K) back to W/(m²·K)?
Divide by the same factor — or equivalently, multiply by 0.2777778. So 1 kJ/(h·m²·K) = 0.277778 W/(m²·K).
When would I need to convert watt per square metre-kelvin to kilojoule per hour-square metre-kelvin?
Heat-transfer coefficient conversions between W/(m²·K) and kJ/(h·m²·K) 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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