Useful Formulas
Conversion Table
Pressure in PSI to Feet of Head
| PSI | FT/Head | PSI | FT/Head |
|---|---|---|---|
| 1 | 2.31 | 19 | 43.9 |
| 2 | 4.62 | 20 | 46.2 |
| 3 | 6.93 | 25 | 57.7 |
| 4 | 9.24 | 30 | 69.3 |
| 5 | 11.6 | 35 | 80.8 |
| 6 | 13.9 | 40 | 92.4 |
| 7 | 16.2 | 45 | 103.9 |
| 8 | 18.5 | 50 | 115.5 |
| 9 | 20.8 | 55 | 127.0 |
| 10 | 23.1 | 60 | 138.6 |
| 11 | 25.4 | 65 | 150.1 |
| 12 | 27.7 | 70 | 161.7 |
| 13 | 30.0 | 75 | 173.2 |
| 14 | 32.3 | 80 | 184.8 |
| 15 | 34.6 | 85 | 196.3 |
| 16 | 37.0 | 90 | 207.9 |
| 17 | 39.3 | 95 | 219.4 |
| 18 | 41.6 | 100 | 230.9 |
Above based on Water at 70°F
