💧 Water Pressure Calculator

Calculate water pressure at different elevations and pipe heights

🔢 Input Parameters

Source Pressure

Height Change (from source)

Positive = going up (pressure drops). Negative = going down (pressure increases)

Fluid Type

📐 Results

Final Pressure at Point

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PSI

Enter values and click calculate

📊 Pressure Reference

0 PSI 20 PSI 40 PSI 60 PSI 80+ PSI

Ideal residential: 40-60 PSI. Below 40 PSI = low. Above 80 PSI = high (needs PRV)

📚 How It Works

Water pressure changes with elevation due to gravity. The hydrostatic pressure formula calculates this change:

ΔP = ρ × g × h

Where:

ΔP = Pressure change (Pa)
ρ = Fluid density (water = 1000 kg/m³)
g = Gravitational acceleration (9.81 m/s²)
h = Height change (meters)

For water: approximately 0.433 PSI per foot of height change (or 1.42 PSI per meter)

⚡ Standard Pressure Guidelines

Residential optimal: 40-60 PSI
Minimum recommended: 30 PSI
Maximum recommended: 80 PSI
City water typical: 50-70 PSI at street level
Well water: 30-50 PSI (with pressure tank)

⚠️ Common Pressure Issues

Low pressure: Check for leaks, clogged pipes, or faulty pressure regulator
High pressure: Install a Pressure Reducing Valve (PRV)
Pressure fluctuations: Check pressure tank if on well system