Convert Centimeters of Water to Gigapascals
Convert Centimeters of Water (cmH₂O) to Gigapascals (GPa) instantly and accurately.
Conversion Formula
GPa = cmH₂O × 9.806650000e-8
About Centimeters of Water
One centimetre of water column (cmH₂O) ≈ 98.07 Pa - the clinical pressure unit for respiratory and intravascular measurements. Mechanical ventilator settings are in cmH₂O: peak inspiratory pressure (PIP) 15-30 cmH₂O; PEEP 5-15 cmH₂O; plateau pressure should stay below 30 cmH₂O to avoid lung injury. Lumbar puncture CSF opening pressure is normally 8-20 cmH₂O. CPAP/BiPAP therapy for sleep apnea: 4-20 cmH₂O. Central venous pressure is also reported in cmH₂O. 1 cmH₂O = 98.0665 Pa.
About Gigapascals
A gigapascal (GPa) = 10⁹ Pa = 10 kbar - the extreme-pressure unit for materials science and planetary physics. Bulk moduli: fused silica 72 GPa; iron 170 GPa; diamond 442 GPa (highest known). Earth's inner core: 330-360 GPa. Jupiter's core: ~40,000-70,000 GPa. NIF laser-shocked experiments create 100-100,000 GPa to reproduce planetary interior conditions. Metallic hydrogen is predicted to form above ~500 GPa and has been tentatively observed at 400-500 GPa in diamond anvil cells. 1 GPa = 10⁹ Pa = 10 kbar.
Quick Reference Table
| Centimeters of Water (cmH₂O) | Gigapascals (GPa) |
|---|---|
| 1 cmH₂O | 9.807 × 10-8 GPa |
| 2 cmH₂O | 1.961 × 10-7 GPa |
| 5 cmH₂O | 4.903 × 10-7 GPa |
| 10 cmH₂O | 9.807 × 10-7 GPa |
| 25 cmH₂O | 2.452 × 10-6 GPa |
| 50 cmH₂O | 4.903 × 10-6 GPa |
| 100 cmH₂O | 9.807 × 10-6 GPa |