▸ processconvert
Heat Transfer

kJ/(h·m²·K)toW/(m²·K)

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

Factor1 kJ/(h·m²·K) = 0.2777778 W/(m²·K)

Converter

kJ/(h·m²·K)

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

Result
27.7778W/(m²·K)

Rendered to 6 significant figures.

Formula

Formula
W/(m²·K) = kJ/(h·m²·K) × 0.2777778

Multiply any value in kilojoules per hour-square metre-kelvin by 0.2777778 to obtain the value in watts per square metre-kelvin.

Worked example

Convert 100 kJ/(h·m²·K) to W/(m²·K).

  1. 01Start with 100 kJ/(h·m²·K).
  2. 02Multiply by the conversion factor: 100 × 0.2777778 = 27.7778 W/(m²·K).
Result100 kJ/(h·m²·K) = 27.7778 W/(m²·K)

Conversion table

kJ/(h·m²·K)W/(m²·K)
10.27778
20.55556
51.3889
102.7778
205.5556
5013.889
10027.778
20055.556
500138.89
1000277.78

Reference values rounded to 5 significant figures for display.

FAQ

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

Related conversions