Entropy Converter
Convert entropy or entropy-change units among J/K, kJ/K, and cal/K using J/K as the reference.
How to use
- Enter entropy or an entropy change and choose same-dimension units from J/K, kJ/K, and cal/K.
Capabilities and scope
Change the unit of a thermodynamic entropy value with energy-per-temperature dimensions.
How it works
J/K is the reference with kJ/K=1000 J/K and cal/K=4.184 J/K.
Example
100 cal/K equals 418.4 J/K.
Useful for
- Convert thermodynamic data from cal/K to J/K
- Compare kJ/K and J/K
- Normalize entropy datasets
Before you use it
- It does not calculate entropy from state variables. Molar entropy J/(mol·K) and specific entropy J/(kg·K) have additional denominator dimensions.
Standards and references
Frequently asked questions
Can J/(mol·K) be directly converted to J/K?
No. The amount of substance in moles is additionally required.