📏 Water Pressure Head Calculator for Plumbing
Convert water elevation into approximate pressure.
This free tool helps you turn project measurements into a practical planning estimate. Enter values in Vaelden’s interactive calculator, review the result, and confirm important assumptions against supplier data, measurements, codes or qualified advice before committing materials or money.
Open the Water Pressure Head calculator →
How to calculate water pressure head
Method: Static pressure = fluid density × gravity × vertical head
- Measure vertical water-level difference.
- Use fluid density appropriate to temperature and composition.
- Calculate static pressure before pipe and fitting losses.
Worked example
Using these planning inputs:
- Water height: 10
- Fluid density: 1000 kg/m³
Static pressure: 98.1 kPa
Reality check: Available pressure under flow is lower because of friction and fittings; tanks, pumps and pressure vessels require appropriate safety design.
Before you calculate
Use consistent units and the best measured inputs available. Real materials, equipment, site conditions and tolerances can change the result. Vaelden shows planning estimates; regulated, structural, electrical, plumbing, pressure and other safety-critical work still requires appropriate local compliance and professional advice.