Static Pressure Head Calculator

Calculator

Solve for

The calculator solves the selected unknown.

Pressure (P)

Measured or specified pressure for the point.

Reference pressure (Pref)

ΔP = P − Pref.

Density mode

Presets help avoid common density mistakes.

Fluid preset

Density is auto-filled from the selection.

Density (ρ)

Used in ρ·g conversion from pressure to head.

Gravity (g)

Local gravity changes slightly by location and altitude.

Head (h)

Needed when solving for ΔP, ρ, or g.

Significant figures

Controls rounding in the displayed results.

Reset

Formula used

Static pressure head expresses pressure as an equivalent height of a fluid column. For a given pressure P and reference Pref, the pressure difference is:

ΔP = P − Pref

The corresponding pressure head h is:

h = ΔP / (ρ · g)

Units must be consistent. This page converts to base SI units internally.

How to use this calculator

Select what you want to solve for.
Enter pressure P and reference Pref with units.
Choose a fluid preset or enter a custom density.
Enter local gravity. Keep units consistent.
If solving for ΔP, ρ, or g, also enter head h.
Click Calculate to show results above the form.
Use Download CSV or Download PDF for reporting.

Example data table

Pressure P	Reference Pref	Density ρ	Gravity g	Head h (result)
200 kPa	0 kPa	998.2 kg/m³	9.80665 m/s²	20.42 m
35 psi	0 psi	850 kg/m³	9.80665 m/s²	28.95 m
2 bar	1 atm	1025 kg/m³	9.80665 m/s²	9.66 m

Example values are illustrative. Use measured density for best accuracy.

Calculator

Formula used

How to use this calculator

Example data table

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