Convert Centimeters of Water to Nanopascals
Convert Centimeters of Water (cmH₂O) to Nanopascals (nPa) instantly and accurately.
Conversion Formula
nPa = cmH₂O × 98066500000
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 Nanopascals
A nanopascal (nPa) is 10⁻⁹ Pa - the pressure scale of deep interplanetary space. LIGO and Virgo gravitational wave detectors must isolate mirror displacement signals against noise floors in the nanopascal regime. Low Earth orbit residual atmosphere is ~100 µPa; deep interplanetary space is ~1-10 nPa depending on solar wind activity. Thermospheric gas layers above 200 km altitude fall into the nPa-µPa range. Casimir force calculations and quantum vacuum fluctuation modelling also operate at nanopascal scales. 1 nPa = 10⁻⁹ Pa.
Quick Reference Table
| Centimeters of Water (cmH₂O) | Nanopascals (nPa) |
|---|---|
| 1 cmH₂O | 9.807 × 1010 nPa |
| 2 cmH₂O | 1.961 × 1011 nPa |
| 5 cmH₂O | 4.903 × 1011 nPa |
| 10 cmH₂O | 9.807 × 1011 nPa |
| 25 cmH₂O | 2.452 × 1012 nPa |
| 50 cmH₂O | 4.903 × 1012 nPa |
| 100 cmH₂O | 9.807 × 1012 nPa |