Convert Centimeters of Water to ksi (cmH2O to ksi)
1 centimeter of water (cmH₂O) = 0.00001422334331 ksi. 1 ksi = 70306.95796 cmH₂O. Example: 15 cmH₂O = 15 × 0.00001422334331 = 0.0002133501496 ksi.
Also searched as centimeters of water to ksi, centimeters of water in ksi, centimeters of water into ksi, cmH2O to ksi, cmH2O in ksi, cmH2O into ksi, centimeter of water to ksi, cmH2O to ksi converter, centimetres of water to ksi and how many ksi in a centimeter of water.
1 cmH₂O = 0.00001422334331 ksi
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk centimeter of water to ksi converter to paste a column from Excel.
How to Convert Centimeter of Water to ksi
- 1 cmH₂O = 0.00001422334331 ksi
- 1 ksi = 70306.95796 cmH₂O
- Example: convert 15 cmH₂O to ksi: 15 cmH₂O = 15 × 0.00001422334331 ksi = 0.0002133501496 ksi
Reference conditions. cmH₂O: Conventional water column: ρ = 1000 kg/m³ and gₙ = 9.80665 m/s² (≈ water at 4 °C).
Formula
ksi = cmH₂O × 0.00001422334330712
or ksi = cmH₂O ÷ 70306.95796392
Derivation from SI units:
- 1 cmH₂O = 1000 kg/m³ × 9.80665 m/s² × 0.01 m = 98.0665 Pa
- 1 ksi = 1000 psi = 1 kip/in² = 6.894757293168 MPa
- 1 cmH₂O = 98.0665 Pa ÷ 6894757.293168 Pa per ksi = 0.00001422334330712 ksi
Both units are defined exactly, so the factor is exact. Centimeter of Water definition: centimeter of water; ksi definition: ksi.
Worked examples
- A reading of 6 cmH₂O converts to 0.00008534005984 ksi.
6 cmH₂O × 0.00001422334331 = 0.00008534005984 ksi - A value of 30 cmH₂O is 0.0004267002992 ksi.
30 cmH₂O × 0.00001422334331 = 0.0004267002992 ksi
Centimeter of Water to ksi conversion table
| Centimeters of Water (cmH₂O) | ksi |
|---|---|
| 0.5 cmH₂O | 0.000007111671654 ksi |
| 1 cmH₂O | 0.00001422334331 ksi |
| 2 cmH₂O | 0.00002844668661 ksi |
| 3 cmH₂O | 0.00004267002992 ksi |
| 4 cmH₂O | 0.00005689337323 ksi |
| 5 cmH₂O | 0.00007111671654 ksi |
| 6 cmH₂O | 0.00008534005984 ksi |
| 8 cmH₂O | 0.0001137867465 ksi |
| 10 cmH₂O | 0.0001422334331 ksi |
| 12 cmH₂O | 0.0001706801197 ksi |
| 15 cmH₂O | 0.0002133501496 ksi |
| 20 cmH₂O | 0.0002844668661 ksi |
| 25 cmH₂O | 0.0003555835827 ksi |
| 30 cmH₂O | 0.0004267002992 ksi |
| 35 cmH₂O | 0.0004978170157 ksi |
| 40 cmH₂O | 0.0005689337323 ksi |
| 50 cmH₂O | 0.0007111671654 ksi |
| 60 cmH₂O | 0.0008534005984 ksi |
| 80 cmH₂O | 0.001137867465 ksi |
| 100 cmH₂O | 0.001422334331 ksi |
Where it's used
Centimeters of Water are used for mechanical ventilation (PEEP 5–10 cmH₂O, plateau pressure under 30 cmH₂O), while ksi appear in yield and tensile strength in ASTM and ASME material specifications. 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 ksi | 0.00001422334331 ksi |
| centimeter of water to pascal | 98.0665 Pa |
| centimeter of water to kilopascal | 0.0980665 kPa |
| 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 |
| centimeter of water to inch of water | 0.3937007874 inH₂O |
Show 12 more units
| centimeter of water to atmosphere | 0.0009678411054 atm |
|---|---|
| centimeter of water to megapascal | 0.0000980665 MPa |
| centimeter of water to gigapascal | 9.80665 × 10⁻⁸ GPa |
| 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 ksi are in 1 centimeter of water?
1 cmH₂O = 0.00001422334331 ksi.
How do I convert centimeters of water to ksi?
Multiply the value in cmH₂O by 0.00001422334331, or divide it by 70306.95796. For example, 15 cmH₂O × 0.00001422334331 = 0.0002133501496 ksi.
Is the cmH₂O to ksi conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
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)".
- 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, "kip per square inch (ksi)".
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 ksi (cmH2O to ksi). Retrieved October 25, 2026, from https://scientificconverters.com/pressure/centimeter-of-water-to-ksi/
IEEE
Scientific Converters, "Convert Centimeters of Water to ksi (cmH2O to ksi)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/pressure/centimeter-of-water-to-ksi/