Convert Kilopascals to Feet of Water
Convert Kilopascals (kPa) to Feet of Water (ftH₂O) instantly and accurately.
Conversion Formula
ftH₂O = kPa × 0.3345525633
About Kilopascals
A kilopascal (kPa) = 1,000 Pa - the practical everyday SI pressure unit for moderate pressures. Car tyre inflation: 200-250 kPa (29-36 psi); truck tyres 550-830 kPa. Blood pressure in SI countries: 16/10.7 kPa (= 120/80 mmHg). Systolic blood pressure 16 kPa. Carbonated beverages are packaged at 200-500 kPa CO₂. Medical oxygen cylinders at 15,000 kPa; scuba cylinders 200-300 bar = 20,000-30,000 kPa. 1 kPa = 1,000 Pa = 0.01 bar = 0.145 psi.
About Feet of Water
One foot of water column (ftH₂O) ≈ 2,989 Pa - the US customary equivalent of cmH₂O used in civil and hydraulic engineering. Municipal water supply systems are designed for 40-80 psi head ≈ 92-184 ft; fire suppression sprinkler systems require minimum 7 psi ≈ 16 ft. Well pump specifications, sump pump head ratings, irrigation mainline pressure, and drainage calculations all use feet of head. 1 ft of water = 12 in WC = 0.4335 psi ≈ 2,989 Pa.
Quick Reference Table
| Kilopascals (kPa) | Feet of Water (ftH₂O) |
|---|---|
| 1 kPa | 0.334553 ftH₂O |
| 2 kPa | 0.669105 ftH₂O |
| 5 kPa | 1.67276 ftH₂O |
| 10 kPa | 3.34553 ftH₂O |
| 25 kPa | 8.36381 ftH₂O |
| 50 kPa | 16.7276 ftH₂O |
| 100 kPa | 33.4553 ftH₂O |