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`DeltaE = Q-W`
Enter a value for all fields
The Change in Internal Energy calculator computes the change in internal energy based on the heat added (Q) and the work done (W).
INSTRUCTIONS: Choose units and enter the following:
- (Q) Heat Added to System
- (W) Work Performed by System
Change in Internal Energy (ΔE): The calculator returns the change in energy in Joules. However, this can be automatically converted to compatible units via the pull-down menu.
The Math / Science
The change in internal energy of a system is equal to the heat added to the system minus the work done by the system. The formula for change in internal energy is:
where
- ΔE = change in internal energy
- Q = heat added to the system
- W = work done by the system
