Convert ksi to Centimeters of Water (ksi to cmH2O)
1 ksi = 70306.95796 centimeters of water (cmH₂O). 1 cmH₂O = 0.00001422334331 ksi. Example: 15 ksi = 15 × 70306.95796 = 1054604.369 cmH₂O.
Also searched as ksi to cmH2O, ksi in cmH2O, ksi into centimeters of water, ksi in centimeters of water, ksi into centimeter of water, ksi to centimeter of water, ksi to centimeters of water converter, ksi to centimetres of water and how many centimeters of water in a ksi.
1 ksi = 70306.95796 cmH₂O
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk ksi to centimeter of water converter to paste a column from Excel.
How to Convert ksi to Centimeter of Water
- 1 ksi = 70306.95796 cmH₂O
- 1 cmH₂O = 0.00001422334331 ksi
- Example: convert 15 ksi to cmH₂O: 15 ksi = 15 × 70306.95796 cmH₂O = 1054604.369 cmH₂O
Reference conditions. cmH₂O: Conventional water column: ρ = 1000 kg/m³ and gₙ = 9.80665 m/s² (≈ water at 4 °C).
Formula
cmH₂O = ksi × 70306.95796392
Derivation from SI units:
- 1 ksi = 1000 psi = 1 kip/in² = 6.894757293168 MPa
- 1 cmH₂O = 1000 kg/m³ × 9.80665 m/s² × 0.01 m = 98.0665 Pa
- 1 ksi = 6894757.293168 Pa ÷ 98.0665 Pa per cmH₂O = 70306.95796392 cmH₂O
Both units are defined exactly, so the factor is exact. ksi definition: ksi; Centimeter of Water definition: centimeter of water.
Worked examples
- A reading of 20 ksi converts to 1406139.159 cmH₂O.
20 ksi × 70306.95796 = 1406139.159 cmH₂O - A value of 65 ksi is 4569952.268 cmH₂O.
65 ksi × 70306.95796 = 4569952.268 cmH₂O
ksi to Centimeter of Water conversion table
| ksi | Centimeters of Water (cmH₂O) |
|---|---|
| 1 ksi | 70306.95796 cmH₂O |
| 3 ksi | 210920.8739 cmH₂O |
| 4 ksi | 281227.8319 cmH₂O |
| 5 ksi | 351534.7898 cmH₂O |
| 10 ksi | 703069.5796 cmH₂O |
| 20 ksi | 1406139.159 cmH₂O |
| 30 ksi | 2109208.739 cmH₂O |
| 36 ksi | 2531050.487 cmH₂O |
| 50 ksi | 3515347.898 cmH₂O |
| 60 ksi | 4218417.478 cmH₂O |
| 65 ksi | 4569952.268 cmH₂O |
| 70 ksi | 4921487.057 cmH₂O |
| 100 ksi | 7030695.796 cmH₂O |
| 150 ksi | 10546043.69 cmH₂O |
| 200 ksi | 14061391.59 cmH₂O |
Where it's used
ksi are used for yield and tensile strength in ASTM and ASME material specifications, while centimeters of water appear in mechanical ventilation (PEEP 5–10 cmH₂O, plateau pressure under 30 cmH₂O). Both measure pressure, stress and differential pressure (force per unit area), so the conversion is a fixed factor.
ksi to other pressure units
| Conversion | 1 ksi equals |
|---|---|
| ksi to centimeter of water | 70306.95796 cmH₂O |
| ksi to pascal | 6894757.293 Pa |
| ksi to kilopascal | 6894.757293 kPa |
| ksi to kilogram-force per square centimetre | 70.30695796 kgf/cm² |
| ksi to psi | 1000 psi |
| ksi to bar | 68.94757293 bar |
| ksi to millimeter of mercury | 51714.9252 mmHg |
| ksi to inch of water | 27679.90471 inH₂O |
Show 12 more units
| ksi to atmosphere | 68.04596391 atm |
|---|---|
| ksi to megapascal | 6.894757293 MPa |
| ksi to gigapascal | 0.006894757293 GPa |
| ksi to newton per square millimetre | 6.894757293 N/mm² |
| ksi to kilogram-force per square millimetre | 0.7030695796 kgf/mm² |
| ksi to millibar | 68947.57293 mbar |
| ksi to torr | 51714.93257 Torr |
| ksi to millimeter of water | 703069.5796 mmH₂O |
| ksi to inch of mercury | 2036.020677 inHg |
| ksi to decibar | 689.4757293 dbar |
| ksi to inch of water (60 °F) | 27707.5924 inH₂O (60 °F) |
| ksi to barye | 68947572.93 Ba |
Frequently asked questions
How many centimeters of water are in 1 ksi?
1 ksi = 70306.95796 cmH₂O.
How do I convert ksi to centimeters of water?
Multiply the value in ksi by 70306.95796. For example, 15 ksi × 70306.95796 = 1054604.369 cmH₂O.
Is the ksi to cmH₂O 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, "kip per square inch (ksi)".
- 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)".
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 ksi to Centimeters of Water (ksi to cmH2O). Retrieved October 25, 2026, from https://scientificconverters.com/pressure/ksi-to-centimeter-of-water/
IEEE
Scientific Converters, "Convert ksi to Centimeters of Water (ksi to cmH2O)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/pressure/ksi-to-centimeter-of-water/