# Specific Internal Energy

Written by Jerry Ratzlaff on . Posted in Thermodynamics

Specific internal energy, abbreviated as u, is the internal energy per unit mass.

### Specific internal energy formula

$$\large{ u = \frac{U}{m} }$$

Where:

$$\large{ u }$$ = specific internal energy

$$\large{ U }$$ = internal energy

$$\large{ m }$$ = mass

Tags: Equations for Energy