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Thermal Capacity

MJ/Ktocal/K

Convert megajoules per kelvin (MJ/K) to calories per kelvin (cal/K).

Factor1 MJ/K = 239005.7 cal/K

Converter

MJ/K

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

Result
239006cal/K

Rendered to 6 significant figures.

Formula

Formula
cal/K = MJ/K × 239005.7

Multiply any value in megajoules per kelvin by 239005.7 to obtain the value in calories per kelvin.

Worked example

Convert 1 MJ/K to cal/K.

  1. 01Start with 1 MJ/K.
  2. 02Multiply by the conversion factor: 1 × 239005.7 = 239006 cal/K.
Result1 MJ/K = 239006 cal/K

Conversion table

MJ/Kcal/K
12.3901e+5
24.7801e+5
51.1950e+6
102.3901e+6
204.7801e+6
501.195e+7
1002.3901e+7
2004.7801e+7
5001.195e+8
10002.3901e+8

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from MJ/K to cal/K?
1 MJ/K equals 239005.7 cal/K. To convert, multiply the value in megajoules per kelvin by 239005.7.
How do I convert 1 MJ/K to cal/K?
1 MJ/K = 239006 cal/K. For any value, multiply by 239005.7.
How do I convert cal/K back to MJ/K?
Divide by the same factor — or equivalently, multiply by 4.184e-6. So 1 cal/K = 4.184e-6 MJ/K.
When would I need to convert megajoule per kelvin to calorie per kelvin?
Thermal-capacity conversions between MJ/K and cal/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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