Convert Centimeters of Water to Petapascals
Convert Centimeters of Water (cmH₂O) to Petapascals (PPa) instantly and accurately.
Conversion Formula
PPa = cmH₂O × 9.806650000e-14
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 Petapascals
A petapascal (PPa) = 10¹⁵ Pa - pressures found in stellar interiors. The Sun's centre is ~25 PPa, sustained by radiation pressure from nuclear fusion balanced against gravity. White dwarf stars: ~10⁴ PPa (electron degeneracy). Neutron stars: ~10⁹-10¹⁰ PPa, where nuclear structure fails and neutrons drip from nuclei at ~4 × 10⁸ PPa (the neutron drip line). The hadron-quark phase transition in the densest neutron star cores is estimated at 10¹⁰-10¹² PPa. No laboratory experiment can approach petapascal pressures. 1 PPa = 10¹⁵ Pa.
Quick Reference Table
| Centimeters of Water (cmH₂O) | Petapascals (PPa) |
|---|---|
| 1 cmH₂O | 9.807 × 10-14 PPa |
| 2 cmH₂O | 1.961 × 10-13 PPa |
| 5 cmH₂O | 4.903 × 10-13 PPa |
| 10 cmH₂O | 9.807 × 10-13 PPa |
| 25 cmH₂O | 2.452 × 10-12 PPa |
| 50 cmH₂O | 4.903 × 10-12 PPa |
| 100 cmH₂O | 9.807 × 10-12 PPa |