ONE FORMULA, ONE ANSWER
Hydrostatic Gauge Pressure Calculator
Check liquid-column pressure in tanks and hydrostatic experiments. Choose input units and calculate one value within the stated conditions.
Inputs
Calculations run in this browser. Scientific notation such as 1.2e-3 is supported. Do not group thousands.
Result
Gauge pressure relative to the surface p_g
Enter values and select Calculate.
p_g = ρ g h
Assumptions
Use ρ,g>0 and h≥0. The liquid is stationary and has uniform density. The output is the pressure difference from the free surface, not absolute pressure.
Displayed values are floating-point approximations. Measurement uncertainty and design safety factors are not calculated.
Formula references and credits
NaNa Lab created the code, descriptions, icons and preview images. Text, figures and code from the linked references have not been reproduced.
Physical constants: NIST / CODATA 2022. The values of μ₀ and ε₀ are measured recommendations, not exact defining constants. Values and precision notes are in the source record.
This site includes Google advertising and analytics, and Cloudflare analytics.