To calculate the total energy of a fluid using the Bernoulli equation, you need to know the fluid's density, velocity, pressure, and height.

**Density**: The density of the fluid, measured in kilograms per cubic meter (kg/m^{3}).**Velocity**: The velocity of the fluid, measured in meters per second (m/s).**Pressure**: The pressure of the fluid, measured in pascals (Pa).**Height**: The height of the fluid, measured in meters (m).

The Bernoulli equation relates the energy of a fluid to its velocity, pressure, and height:

**0.5 * Density * Velocity ^{2} + Density * g * Height + Pressure = Total Energy**

This equation can be used to calculate the total energy of a fluid at different points along a streamline, assuming that there is no energy added or lost due to friction or other factors. The density, velocity, pressure, and height are the input values needed to calculate the total energy.