Convert Kilobars to Millimeters of Water
Convert Kilobars (kbar) to Millimeters of Water (mmH₂O) instantly and accurately.
Conversion Formula
mmH₂O = kbar × 10197162.13
About Kilobars
A kilobar (kbar) = 1,000 bar = 100 MPa = 10⁸ Pa - standard in high-pressure geophysics and experimental petrology. Earth mantle phase transitions: olivine → wadsleyite at ~130-140 kbar (410 km depth); post-spinel transition at ~230 kbar (660 km). Diamond anvil cells routinely reach 100-400 kbar for materials synthesis and equation-of-state measurement. High-pressure synthesis of cubic boron nitride (~50 kbar) and superhard materials uses large-volume presses. Explosive shock pressures for mining and demolition: 100-1,000 kbar. 1 kbar = 100 MPa.
About Millimeters of Water
One millimetre of water column (mmH₂O) = pressure from 1 mm of fresh water at standard gravity = exactly 9.80665 Pa. Preferred for very low differential pressures in HVAC: ductwork static pressures, fan curves, filter resistance, and building pressurisation are in mm WC. Gas valve operating pressures are typically 0.5-3 mm WC; clean-room cascade differentials 12-25 mm WC. A domestic gas hob manifold operates at ~20 mm WC on natural gas. Also used in spirometer calibration and hospital oxygen delivery systems. 1 mmH₂O = 9.80665 Pa.
Quick Reference Table
| Kilobars (kbar) | Millimeters of Water (mmH₂O) |
|---|---|
| 1 kbar | 10197200 mmH₂O |
| 2 kbar | 20394300 mmH₂O |
| 5 kbar | 50985800 mmH₂O |
| 10 kbar | 101972000 mmH₂O |
| 25 kbar | 254929000 mmH₂O |
| 50 kbar | 509858000 mmH₂O |
| 100 kbar | 1.02 × 109 mmH₂O |