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Thermal Capacity

kWh/KtoMJ/K

Convert kilowatt-hours per kelvin (kWh/K) to megajoules per kelvin (MJ/K).

Factor1 kWh/K = 3.6 MJ/K

Converter

kWh/K

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

Result
3.6MJ/K

Rendered to 6 significant figures.

Formula

Formula
MJ/K = kWh/K × 3.6

Multiply any value in kilowatt-hours per kelvin by 3.6 to obtain the value in megajoules per kelvin.

Worked example

Convert 1 kWh/K to MJ/K.

  1. 01Start with 1 kWh/K.
  2. 02Multiply by the conversion factor: 1 × 3.6 = 3.6 MJ/K.
Result1 kWh/K = 3.6 MJ/K

Conversion table

kWh/KMJ/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 kWh/K to MJ/K?
1 kWh/K equals 3.6 MJ/K. To convert, multiply the value in kilowatt-hours per kelvin by 3.6.
How do I convert 1 kWh/K to MJ/K?
1 kWh/K = 3.6 MJ/K. For any value, multiply by 3.6.
How do I convert MJ/K back to kWh/K?
Divide by the same factor — or equivalently, multiply by 0.2777778. So 1 MJ/K = 0.277778 kWh/K.
When would I need to convert kilowatt-hour per kelvin to megajoule per kelvin?
Thermal-capacity conversions between kWh/K and MJ/K appear in thermal-mass analysis of bodies, calorimetry, R-C thermal-network modelling, electronics thermal capacitance and large-equipment thermal-storage sizing. J/K and kJ/K are the SI standard; MJ/K and kWh/K cover large-equipment and building thermal-mass notation; BTU/°F is the US convention; cal/K and kcal/K are common in chemistry and thermochemistry. This category is lumped heat capacity only — it does NOT include specific heat capacity (J/(kg·K), requires mass), molar heat capacity (J/(mol·K), requires molecular weight) or volumetric heat capacity, all of which are different physical quantities.
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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