How it works
Hydrostatic gauge pressure = fluid density × gravitational acceleration × vertical liquid head.
Input definitions
- Fluid density (kg/m³)
- Enter the value in the labeled unit.
- Liquid height (m)
- Enter the value in the labeled unit.
- Gravitational acceleration (m/s²)
- Enter the value in the labeled unit.
A worked example
- Fluid density (kg/m³)
- 1000
- Liquid height (m)
- 2
- Gravitational acceleration (m/s²)
- 9.80665
Assumptions & limits
Static incompressible fluid with uniform density. Excludes atmospheric pressure, pump pressure and flowing-pipe losses.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-17. Content checked against the stated method and examples. Our verification approach.
Common questions
Is pressure from liquid head gauge or absolute pressure?
The result is gauge pressure from the liquid column. To obtain absolute pressure, add the absolute pressure at the liquid surface, using the same pressure units.
Which units should I enter?
Use the units written in each input label. These formulas assume idealized conditions; changing to centimetres, litres or kilopascals without conversion changes the meaning of the result.
How does the Fluid pressure from liquid head tool work?
Hydrostatic gauge pressure = fluid density × gravitational acceleration × vertical liquid head.
What are the assumptions and limits of Fluid pressure from liquid head?
Static incompressible fluid with uniform density. Excludes atmospheric pressure, pump pressure and flowing-pipe losses.