Convert Atmospheres to ksi (atm to ksi)
1 atmosphere (atm) = 0.01469594878 ksi. 1 ksi = 68.04596391 atm. Example: 15 atm = 15 × 0.01469594878 = 0.2204392316 ksi.
Also searched as atmospheres to ksi, atmospheres in ksi, atmospheres into ksi, atm to ksi, atm in ksi, atm into ksi, atmosphere to ksi, atm to ksi converter and how many ksi in an atmosphere.
1 atm = 0.01469594878 ksi
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk atmosphere to ksi converter to paste a column from Excel.
How to Convert Atmosphere to ksi
- 1 atm = 0.01469594878 ksi
- 1 ksi = 68.04596391 atm
- Example: convert 15 atm to ksi: 15 atm = 15 × 0.01469594878 ksi = 0.2204392316 ksi
Formula
ksi = atm × 0.01469594877551
or ksi = atm ÷ 68.04596390988
Derivation from SI units:
- 1 atm = 101 325 Pa (exact, by definition)
- 1 ksi = 1000 psi = 1 kip/in² = 6.894757293168 MPa
- 1 atm = 101325 Pa ÷ 6894757.293168 Pa per ksi = 0.01469594877551 ksi
Both units are defined exactly, so the factor is exact. Atmosphere definition: atmosphere; ksi definition: ksi.
Worked examples
- A reading of 1.5 atm converts to 0.02204392316 ksi.
1.5 atm × 0.01469594878 = 0.02204392316 ksi - A value of 10 atm is 0.1469594878 ksi.
10 atm × 0.01469594878 = 0.1469594878 ksi
Atmosphere to ksi conversion table
| Atmospheres (atm) | ksi |
|---|---|
| 0.001 atm | 0.00001469594878 ksi |
| 0.01 atm | 0.0001469594878 ksi |
| 0.1 atm | 0.001469594878 ksi |
| 0.25 atm | 0.003673987194 ksi |
| 0.5 atm | 0.007347974388 ksi |
| 1 atm | 0.01469594878 ksi |
| 1.5 atm | 0.02204392316 ksi |
| 2 atm | 0.02939189755 ksi |
| 2.5 atm | 0.03673987194 ksi |
| 3 atm | 0.04408784633 ksi |
| 4 atm | 0.0587837951 ksi |
| 5 atm | 0.07347974388 ksi |
| 10 atm | 0.1469594878 ksi |
| 20 atm | 0.2939189755 ksi |
| 50 atm | 0.7347974388 ksi |
| 100 atm | 1.469594878 ksi |
| 200 atm | 2.939189755 ksi |
| 300 atm | 4.408784633 ksi |
| 1000 atm | 14.69594878 ksi |
Where it's used
Atmospheres are used for chemistry and gas laws (STP and NTP conditions), 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.
Atmosphere to other pressure units
| Conversion | 1 atm equals |
|---|---|
| atmosphere to ksi | 0.01469594878 ksi |
| atmosphere to pascal | 101325 Pa |
| atmosphere to kilopascal | 101.325 kPa |
| atmosphere to kilogram-force per square centimetre | 1.033227453 kgf/cm² |
| atmosphere to psi | 14.69594878 psi |
| atmosphere to bar | 1.01325 bar |
| atmosphere to millimeter of mercury | 759.9998917 mmHg |
| atmosphere to inch of water | 406.7824617 inH₂O |
Show 12 more units
| atmosphere to megapascal | 0.101325 MPa |
|---|---|
| atmosphere to gigapascal | 0.000101325 GPa |
| atmosphere to newton per square millimetre | 0.101325 N/mm² |
| atmosphere to kilogram-force per square millimetre | 0.01033227453 kgf/mm² |
| atmosphere to millibar | 1013.25 mbar |
| atmosphere to torr | 760 Torr |
| atmosphere to millimeter of water | 10332.27453 mmH₂O |
| atmosphere to centimeter of water | 1033.227453 cmH₂O |
| atmosphere to inch of mercury | 29.92125558 inHg |
| atmosphere to decibar | 10.1325 dbar |
| atmosphere to inch of water (60 °F) | 407.1893586 inH₂O (60 °F) |
| atmosphere to barye | 1013250 Ba |
Frequently asked questions
How many ksi are in 1 atmosphere?
1 atm = 0.01469594878 ksi.
How do I convert atmospheres to ksi?
Multiply the value in atm by 0.01469594878, or divide it by 68.04596391. For example, 15 atm × 0.01469594878 = 0.2204392316 ksi.
Is the atm 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, "atmosphere, standard (atm)".
- 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 Atmospheres to ksi (atm to ksi). Retrieved October 25, 2026, from https://scientificconverters.com/pressure/atmosphere-to-ksi/
IEEE
Scientific Converters, "Convert Atmospheres to ksi (atm to ksi)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/pressure/atmosphere-to-ksi/