The calculation of enthalpy is possibly done in a very simple way, and it is because it makes it possible to find the right answer.

## What is enthalpy?

Enthalpy is a thermodynamic function of an object's energy state. The thermodynamic action in a system is equal to the sum of the product of the internal energy of the system plus its volume and pressure acting on the system from the outside world.

## How to calculate enthalpy in Excel?

However, the first thing you need is data that looks like this:

This is just an example data set which contains temperature and humidity values.

Click on an empty cell (1), and enter the formula **=(C4*B4) + B5*(C5+C6*B6)** (2).

Enthalpy change has been calculated.