Convert Feet of Water to Bars
Convert Feet of Water (ftH₂O) to Bars (bar) instantly and accurately.
Conversion Formula
bar = ftH₂O × 0.0298906692
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.
About Bars
A bar = exactly 100,000 Pa ≈ 0.987 atm - the world standard for industrial pressure outside North America. Hydraulic systems, pneumatic equipment, gas cylinders, dive computers, and tyre gauges in Europe and Asia use bar. Scuba diving: +1 bar per 10 m depth; at 40 m recreational limit = 5 bar absolute. European tyre pressure labels show bar alongside kPa. Industrial processes: steam at 10-50 bar; high-pressure reactors 100-300 bar; water-jet cutting 1,000-4,000 bar. 1 bar = 100,000 Pa = 14.504 psi.
Quick Reference Table
| Feet of Water (ftH₂O) | Bars (bar) |
|---|---|
| 1 ftH₂O | 0.0298907 bar |
| 2 ftH₂O | 0.0597813 bar |
| 5 ftH₂O | 0.149453 bar |
| 10 ftH₂O | 0.298907 bar |
| 25 ftH₂O | 0.747267 bar |
| 50 ftH₂O | 1.49453 bar |
| 100 ftH₂O | 2.98907 bar |