Enter the change in pressure (N/m^2) and the change in volume (m^3) into the calculator to determine the Enthalpy From Pressure.

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## Enthalpy From Pressure Formula

The following formula is used to calculate the Enthalpy From Pressure.

Ep = dP*dV

- Where Ep is the Enthalpy From Pressure (J)
- dP is the change in pressure (N/m^2)
- dV is the change in volume (m^3)

To calculate the enthalpy from pressure, multiply the change in pressure by the change in volume.

## How to Calculate Enthalpy From Pressure?

The following two example problems outline how to calculate the Enthalpy From Pressure.

**Example Problem #1:**

- First, determine the change in pressure (N/m^2). In this example, the change in pressure (N/m^2) is given as 13.
- Next, determine the change in volume (m^3). For this problem, the change in volume (m^3) is given as 4.
- Finally, calculate the Enthalpy From Pressure using the equation above:

Ep = dP*dV

Inserting the values from above and solving the equation:

Ep = 13*4 = 52 (J)

**Example Problem #2: **

Using the same process as above, first define the variables required by the formula. In this case, these values are provided as the following:

change in pressure (N/m^2) = 16

change in volume (m^3) = 8

Entering these values gives:

Ep = 16*8 = 128 (J)