Convert ksi to psi
1 ksi = 1000 psi. 1 psi = 0.001 ksi. Example: 60 ksi = 60 × 1000 = 60000 psi.
Also searched as ksi to psi, ksi in psi, ksi into psi, ksi to psi converter and how many psi in a ksi.
1 ksi = 1000 psi
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk ksi to psi converter to paste a column from Excel.
How to Convert ksi to psi
- 1 ksi = 1000 psi
- 1 psi = 0.001 ksi
- Example: convert 60 ksi to psi: 60 ksi = 60 × 1000 psi = 60000 psi
Formula
psi = ksi × 1000
Derivation from SI units:
- 1 ksi = 1000 psi = 1 kip/in² = 6.894757293168 MPa
- 1 psi = 1 lbf/in² = (0.45359237 kg × 9.80665 m/s²) ÷ (0.0254 m)² = 6894.757293168 Pa
- 1 ksi = 6894757.293168 Pa ÷ 6894.757293168 Pa per psi = 1000 psi
Both units are defined exactly, so the factor is exact. ksi definition: ksi; psi definition: psi.
Worked examples
- Grade 60 rebar at 60 ksi yields at 60000 psi.
60 ksi × 1000 = 60000 psi - Concrete with f′c = 5 ksi is 5000 psi.
5 ksi × 1000 = 5000 psi
ksi to psi conversion table
| ksi | psi |
|---|---|
| 1 ksi | 1000 psi |
| 3 ksi | 3000 psi |
| 4 ksi | 4000 psi |
| 5 ksi | 5000 psi |
| 10 ksi | 10000 psi |
| 20 ksi | 20000 psi |
| 30 ksi | 30000 psi |
| 36 ksi | 36000 psi |
| 50 ksi | 50000 psi |
| 60 ksi | 60000 psi |
| 65 ksi | 65000 psi |
| 70 ksi | 70000 psi |
| 100 ksi | 100000 psi |
| 150 ksi | 150000 psi |
| 200 ksi | 200000 psi |
Where it's used
Strengths in ksi are converted to psi for gauges, test machines and specifications that use plain psi. Multiply by 1000.
ksi to other pressure units
| Conversion | 1 ksi equals |
|---|---|
| ksi to psi | 1000 psi |
| 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 bar | 68.94757293 bar |
| ksi to millimeter of mercury | 51714.9252 mmHg |
| ksi to inch of water | 27679.90471 inH₂O |
| ksi to atmosphere | 68.04596391 atm |
Show 12 more units
| 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 centimeter of water | 70306.95796 cmH₂O |
| 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
What does ksi stand for?
Kilopound per square inch: 1 ksi = 1 kip/in² = 1000 lbf/in².
How many psi are in 1 ksi?
1 ksi = 1000 psi.
How do I convert ksi to psi?
Multiply the value in ksi by 1000. For example, 60 ksi × 1000 = 60000 psi.
Is the ksi to psi conversion exact?
Yes. Both units are defined exactly, and 1 ksi is exactly 1000 psi.
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, "pound-force per square inch (psi)".
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 psi. Retrieved October 25, 2026, from https://scientificconverters.com/pressure/ksi-to-psi/
IEEE
Scientific Converters, "Convert ksi to psi," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/pressure/ksi-to-psi/