Convert Centimeters of Water to Gigapascals (cmH2O to GPa)
1 centimeter of water (cmH₂O) = 9.80665 × 10⁻⁸ gigapascals (GPa). 1 GPa = 10197162.13 cmH₂O. Example: 15 cmH₂O = 15 × 9.80665 × 10⁻⁸ = 0.0000014709975 GPa.
Also searched as centimeters of water to GPa, centimeters of water in GPa, centimeters of water into gigapascals, cmH2O to GPa, cmH2O in gigapascals, cmH2O into gigapascal, centimeter of water to gigapascal, cmH2O to gigapascals converter, centimetres of water to gigapascals and how many gigapascals in a centimeter of water.
1 cmH₂O = 9.80665e-8 GPa
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk centimeter of water to gigapascal converter to paste a column from Excel.
How to Convert Centimeter of Water to Gigapascal
- 1 cmH₂O = 9.80665 × 10⁻⁸ GPa
- 1 GPa = 10197162.13 cmH₂O
- Example: convert 15 cmH₂O to GPa: 15 cmH₂O = 15 × 9.80665 × 10⁻⁸ GPa = 0.0000014709975 GPa
Reference conditions. cmH₂O: Conventional water column: ρ = 1000 kg/m³ and gₙ = 9.80665 m/s² (≈ water at 4 °C).
Formula
GPa = cmH₂O × 9.80665 × 10⁻⁸
or GPa = cmH₂O ÷ 10197162.12978
Derivation from SI units:
- 1 cmH₂O = 1000 kg/m³ × 9.80665 m/s² × 0.01 m = 98.0665 Pa
- 1 GPa = 10⁹ Pa = 1000 MPa = 1 kN/mm²
- 1 cmH₂O = 98.0665 Pa ÷ 1000000000 Pa per GPa = 9.80665 × 10⁻⁸ GPa
Both units are defined exactly, so the factor is exact. Centimeter of Water definition: centimeter of water; Gigapascal definition: gigapascal.
Worked examples
- A reading of 6 cmH₂O converts to 5.88399 × 10⁻⁷ GPa.
6 cmH₂O × 9.80665 × 10⁻⁸ = 5.88399 × 10⁻⁷ GPa - A value of 30 cmH₂O is 0.000002941995 GPa.
30 cmH₂O × 9.80665 × 10⁻⁸ = 0.000002941995 GPa
Centimeter of Water to Gigapascal conversion table
| Centimeters of Water (cmH₂O) | Gigapascals (GPa) |
|---|---|
| 0.5 cmH₂O | 4.903325 × 10⁻⁸ GPa |
| 1 cmH₂O | 9.80665 × 10⁻⁸ GPa |
| 2 cmH₂O | 1.96133 × 10⁻⁷ GPa |
| 3 cmH₂O | 2.941995 × 10⁻⁷ GPa |
| 4 cmH₂O | 3.92266 × 10⁻⁷ GPa |
| 5 cmH₂O | 4.903325 × 10⁻⁷ GPa |
| 6 cmH₂O | 5.88399 × 10⁻⁷ GPa |
| 8 cmH₂O | 7.84532 × 10⁻⁷ GPa |
| 10 cmH₂O | 9.80665 × 10⁻⁷ GPa |
| 12 cmH₂O | 0.000001176798 GPa |
| 15 cmH₂O | 0.0000014709975 GPa |
| 20 cmH₂O | 0.00000196133 GPa |
| 25 cmH₂O | 0.0000024516625 GPa |
| 30 cmH₂O | 0.000002941995 GPa |
| 35 cmH₂O | 0.0000034323275 GPa |
| 40 cmH₂O | 0.00000392266 GPa |
| 50 cmH₂O | 0.000004903325 GPa |
| 60 cmH₂O | 0.00000588399 GPa |
| 80 cmH₂O | 0.00000784532 GPa |
| 100 cmH₂O | 0.00000980665 GPa |
Where it's used
Centimeters of Water are used for mechanical ventilation (PEEP 5–10 cmH₂O, plateau pressure under 30 cmH₂O), while gigapascals appear in young's modulus and shear modulus of metals, ceramics and composites. Both measure pressure, stress and differential pressure (force per unit area), so the conversion is a fixed factor.
Centimeter of Water to other pressure units
| Conversion | 1 cmH₂O equals |
|---|---|
| centimeter of water to gigapascal | 9.80665 × 10⁻⁸ GPa |
| centimeter of water to pascal | 98.0665 Pa |
| centimeter of water to kilopascal | 0.0980665 kPa |
| centimeter of water to ksi | 0.00001422334331 ksi |
| centimeter of water to kilogram-force per square centimetre | 0.001 kgf/cm² |
| centimeter of water to psi | 0.01422334331 psi |
| centimeter of water to bar | 0.000980665 bar |
| centimeter of water to millimeter of mercury | 0.7355591353 mmHg |
Show 12 more units
| centimeter of water to inch of water | 0.3937007874 inH₂O |
|---|---|
| centimeter of water to atmosphere | 0.0009678411054 atm |
| centimeter of water to megapascal | 0.0000980665 MPa |
| centimeter of water to newton per square millimetre | 0.0000980665 N/mm² |
| centimeter of water to kilogram-force per square millimetre | 0.00001 kgf/mm² |
| centimeter of water to millibar | 0.980665 mbar |
| centimeter of water to torr | 0.7355592401 Torr |
| centimeter of water to millimeter of water | 10 mmH₂O |
| centimeter of water to inch of mercury | 0.02895902107 inHg |
| centimeter of water to decibar | 0.00980665 dbar |
| centimeter of water to inch of water (60 °F) | 0.3940945989 inH₂O (60 °F) |
| centimeter of water to barye | 980.665 Ba |
Frequently asked questions
How many gigapascals are in 1 centimeter of water?
1 cmH₂O = 9.80665 × 10⁻⁸ GPa.
How do I convert centimeters of water to gigapascals?
Multiply the value in cmH₂O by 9.80665 × 10⁻⁸, or divide it by 10197162.13. For example, 15 cmH₂O × 9.80665 × 10⁻⁸ = 0.0000014709975 GPa.
Is the cmH₂O to GPa conversion exact?
Yes. Both units are defined exactly, and 1 cmH₂O is exactly 9.80665 × 10⁻⁸ GPa.
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "centimeter of water, conventional (cmH2O)".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Centimeters of Water to Gigapascals (cmH2O to GPa). Retrieved October 25, 2026, from https://scientificconverters.com/pressure/centimeter-of-water-to-gigapascal/
IEEE
Scientific Converters, "Convert Centimeters of Water to Gigapascals (cmH2O to GPa)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/pressure/centimeter-of-water-to-gigapascal/