ftH₂O to psi converter
Convert feet of water (ftH₂O) to psi (psi). 1 ftH₂O = 0.433528 psi.
Calculating…
Conversion factor
1 ftH₂O = 0.433528 psi · 1 psi = 2.30666 ftH₂O
ftH₂O to psi table
| ftH₂O | psi |
|---|---|
| 0.5 ftH₂O | 0.216764 psi |
| 1 ftH₂O | 0.433528 psi |
| 2 ftH₂O | 0.867055 psi |
| 3 ftH₂O | 1.30058 psi |
| 4 ftH₂O | 1.73411 psi |
| 5 ftH₂O | 2.16764 psi |
| 6 ftH₂O | 2.60117 psi |
| 7 ftH₂O | 3.03469 psi |
| 8 ftH₂O | 3.46822 psi |
| 9 ftH₂O | 3.90175 psi |
| 10 ftH₂O | 4.33528 psi |
| 12 ftH₂O | 5.20233 psi |
| 15 ftH₂O | 6.50291 psi |
| 20 ftH₂O | 8.67055 psi |
| 25 ftH₂O | 10.8382 psi |
| 30 ftH₂O | 13.0058 psi |
| 40 ftH₂O | 17.3411 psi |
| 50 ftH₂O | 21.6764 psi |
| 75 ftH₂O | 32.5146 psi |
| 100 ftH₂O | 43.3528 psi |
1 bar = 14.504 psi = 100 kPa = 29.53 inHg. Gauge pressure (barg, psig) is measured above atmospheric; absolute pressure (bara, psia) adds about 1.013 bar / 14.7 psi. This converter changes units only. For vacuum readings, use the vacuum converter.
inHg and mmHg values assume mercury at 0 °C; inH₂O uses water at 4 °C. Those are the conventional definitions used by most gauge makers.