EngiRef / Fluids Engineering Formula
Hydrostatic Pressure
Hydrostatic Pressure: Pressure due to fluid column. A Fluid Statics formula in fluids engineering. Variables P, ρ, g and h, each with SI and imperial units.
Fluid Statics
Specification
- Name
- Hydrostatic Pressure
- Discipline
- fluids
- Category
- Fluid Statics
- LaTeX
- P = \rho gh
- Description
- Pressure due to fluid column
- Conditions
- Gauge pressure at depth in a constant-density fluid
- Can solve for
- P, ρ, h
- Tags
- hydrostatic, pressure, depth, static
Variables
| Symbol | Name | Unit | Si Unit | Imperial Unit |
|---|---|---|---|---|
| P | Pressure | Pa | Pa | psi |
| ρ | Fluid Density | kg/m³ | kg/m³ | slug/ft³ |
| g | Gravity | m/s² | m/s² | - |
| h | Depth | m | m | ft |
Common questions
- What is the Hydrostatic Pressure formula?
- Pressure due to fluid column. It sits under Fluid Statics, Fluids engineering in the EngiRef reference.
- What do the symbols in the Hydrostatic Pressure formula mean?
- In Hydrostatic Pressure, P is pressure in Pa; ρ is fluid density in kg/m³; g is gravity in m/s²; h is depth in m.
- When does the Hydrostatic Pressure formula apply?
- Hydrostatic Pressure holds under this condition: Gauge pressure at depth in a constant-density fluid.