▸ processconvert
Thermal Capacity

kcal/KtomJ/K

Convert kilocalories per kelvin (kcal/K) to millijoules per kelvin (mJ/K).

Factor1 kcal/K = 4184000 mJ/K

Converter

kcal/K

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

Result
4.18400e+6mJ/K

Rendered to 6 significant figures.

Formula

Formula
mJ/K = kcal/K × 4184000

Multiply any value in kilocalories per kelvin by 4184000 to obtain the value in millijoules per kelvin.

Worked example

Convert 1 kcal/K to mJ/K.

  1. 01Start with 1 kcal/K.
  2. 02Multiply by the conversion factor: 1 × 4184000 = 4.18400e+6 mJ/K.
Result1 kcal/K = 4.18400e+6 mJ/K

Conversion table

kcal/KmJ/K
14.1840e+6
28.3680e+6
52.092e+7
104.184e+7
208.368e+7
502.092e+8
1004.184e+8
2008.368e+8
5002.092e+9
10004.184e+9

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from kcal/K to mJ/K?
1 kcal/K equals 4184000 mJ/K. To convert, multiply the value in kilocalories per kelvin by 4184000.
How do I convert 1 kcal/K to mJ/K?
1 kcal/K = 4.18400e+6 mJ/K. For any value, multiply by 4184000.
How do I convert mJ/K back to kcal/K?
Divide by the same factor — or equivalently, multiply by 2.390057e-7. So 1 mJ/K = 2.39006e-7 kcal/K.
When would I need to convert kilocalorie per kelvin to millijoule per kelvin?
Thermal-capacity conversions between kcal/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).

Related conversions