Elevation / Static Head Pressure Calculator

Water is heavy and honest: a 100 ft column presses at its base with exactly the weight of the water above it. That single fact explains tank towers, basement taps, third-floor showers and why pumps must push against a column, not just along a pipe.

Elevation / Static Head Pressure Calculator converts feet of head to PSI and back, so you can read a pressure chart or a water tower in either currency.

• Feet to PSI: Head height into pressure.
• PSI to feet: Pressure back into column height.
• Rise / descent: What elevation costs or gives back.
• Tank / tower: Pressure at the base of a water column.
• Quick equivalents: Common heights as pressure, and back.
• Export: Copy or download the report.

1. Enter either a height in feet or a pressure in PSI.
2. Read the other immediately - the conversion is live.
3. For a rise or descent, enter the difference in feet to see the PSI gained or taxed.
4. Check the quick table for common floor-to-floor shortcuts.

Example - Tank tower. A municipal tower holds the water 120 ft above the town: about 52 PSI at street level before friction - the classic gravity feed. Raise the water level by 10 ft and every fixture gains 4.33 PSI.

Example - Upstairs tap. A third-floor shower 24 ft above the main loses about 10.4 PSI to elevation alone. Add friction and the case for a smaller, shorter riser becomes obvious.

• Instant conversions: Feet to PSI and back, live.
• Plan multistory feeds: See rises and descents clearly.
• Diagnose weak fixtures: Compare elevation cost with friction cost.
• Free and private: No uploads, no logging.