Feet of head to pounds per square inch
Type a value in ft to get it in psi instantly.
That's 3× as high as a tap on the same floor, while a house supply is 2.2× higher. That would reach about 3.048 floors up a building.
Convert the other way: psi to ft
What it means
How high will it push?
This is static head. A real system also loses head to friction in the pipe, which grows with the square of the flow.
The math
How to convert ft to psi
A column of fluid pushes with p = ρ g h: the height times the density times gravity. For water that is about 1 bar every 10 meters, or 1 psi every 2.31 feet. The figures below use the fluid selected above.
Example: 30 ft = 12.9824 psi.
The table below is for Water (998 kg/m³).
Every unit
Your head in every unit
Tables
ft to psi conversion table
| ft | psi |
|---|---|
| 1 ft | 0.432747 psi |
| 2 ft | 0.865494 psi |
| 5 ft | 2.16374 psi |
| 10 ft | 4.32747 psi |
| 20 ft | 8.65494 psi |
| 30 ft | 12.9824 psi |
| 50 ft | 21.6374 psi |
| 75 ft | 32.456 psi |
| 100 ft | 43.2747 psi |
| 150 ft | 64.9121 psi |
| 200 ft | 86.5494 psi |
psi to ft conversion table
| psi | ft |
|---|---|
| 1 psi | 2.31082 ft |
| 2 psi | 4.62164 ft |
| 5 psi | 11.5541 ft |
| 10 psi | 23.1082 ft |
| 20 psi | 46.2164 ft |
| 30 psi | 69.3245 ft |
| 50 psi | 115.541 ft |
| 75 psi | 173.311 ft |
| 100 psi | 231.082 ft |
| 150 psi | 346.623 ft |
| 200 psi | 462.164 ft |
Quick answers
Quick answers
- How many psi is 1 ft?
- 1 ft is 0.432747 psi.
- How many psi is 10 ft?
- 10 ft is 4.32747 psi.
- How many psi is 30 ft?
- 30 ft is 12.9824 psi.
The units
About these units
Feet of head (ft)
The US pump measure. 2.31 feet of water is 1 psi.
Pounds per square inch (psi)
The US pressure unit on every gauge and pressure switch.
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