Convert Feet of Water to Millipascals
Convert Feet of Water (ftH₂O) to Millipascals (mPa) instantly and accurately.
Conversion Formula
mPa = ftH₂O × 2989066.92
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 Millipascals
A millipascal (mPa) is 10⁻³ Pa. It appears primarily in rheology as the millipascal-second (mPa·s = centipoise) for dynamic viscosity: water at 20°C is 1.002 mPa·s; olive oil ~80 mPa·s; honey 2,000-10,000 mPa·s. Food technology, polymer processing, pharmaceutical formulation, and inkjet printing all specify flow behaviour in mPa·s. Partial pressures of trace atmospheric gases and ultra-high-vacuum leak rates measured by residual gas analysers are also expressed in millipascals. 1 mPa = 10⁻³ Pa.
Quick Reference Table
| Feet of Water (ftH₂O) | Millipascals (mPa) |
|---|---|
| 1 ftH₂O | 2989070 mPa |
| 2 ftH₂O | 5978130 mPa |
| 5 ftH₂O | 14945300 mPa |
| 10 ftH₂O | 29890700 mPa |
| 25 ftH₂O | 74726700 mPa |
| 50 ftH₂O | 149453000 mPa |
| 100 ftH₂O | 298907000 mPa |