Convert Feet of Water to Terapascals
Convert Feet of Water (ftH₂O) to Terapascals (TPa) instantly and accurately.
Conversion Formula
TPa = ftH₂O × 2.989066920e-9
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 Terapascals
A terapascal (TPa) = 10¹² Pa = 10 Mbar - pressures in giant planet cores and at the frontier of high-energy-density physics. Jupiter's centre: ~40-70 TPa; Saturn's: ~10 TPa. Earth's inner core: ~0.35 TPa; core-mantle boundary: ~0.14 TPa. Laser-driven ramp and shock compression at NIF approaches TPa regimes for fusion implosion capsule research. Hydrogen is predicted to become a superconducting metal at ~0.5-5 TPa. Understanding TPa equations of state is critical for modelling exoplanet interiors. 1 TPa = 10¹² Pa.
Quick Reference Table
| Feet of Water (ftH₂O) | Terapascals (TPa) |
|---|---|
| 1 ftH₂O | 2.989 × 10-9 TPa |
| 2 ftH₂O | 5.978 × 10-9 TPa |
| 5 ftH₂O | 1.495 × 10-8 TPa |
| 10 ftH₂O | 2.989 × 10-8 TPa |
| 25 ftH₂O | 7.473 × 10-8 TPa |
| 50 ftH₂O | 1.495 × 10-7 TPa |
| 100 ftH₂O | 2.989 × 10-7 TPa |