Stress
psitoksi
Convert pounds-force per square inch (stress) (psi) to kilopounds-force per square inch (stress) (ksi).
Factor1 psi = 0.001 ksi
Converter
psi
Accepts numbers or expressions, e.g. 150 + 14.7
Result
ksi
Rendered to 6 significant figures.
Formula
Formula
ksi = psi × 0.001
Multiply any value in pounds-force per square inch (stress) by 0.001 to obtain the value in kilopounds-force per square inch (stress).
Worked example
Convert 1000 psi to ksi.
- 01Start with 1000 psi.
- 02Multiply by the conversion factor: 1000 × 0.001 = 1 ksi.
Result1000 psi = 1 ksi
Conversion table
| psi | ksi |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 50 | 0.05 |
| 100 | 0.1 |
| 200 | 0.2 |
| 500 | 0.5 |
| 1000 | 1 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from psi to ksi?
1 psi equals 0.001 ksi. To convert, multiply the value in pounds-force per square inch (stress) by 0.001.
How do I convert 1 psi to ksi?
1 psi = 0.001 ksi. For any value, multiply by 0.001.
How do I convert ksi back to psi?
Divide by the same factor — or equivalently, multiply by 1000. So 1 ksi = 1000 psi.
When would I need to convert pound-force per square inch (stress) to kilopound-force per square inch (stress)?
Stress conversions between psi and ksi are routine in mechanics-of-materials work: yield, ultimate and allowable-stress specification, Young's-modulus tables and structural-design code calculations. MPa and N/mm² dominate ISO and European datasheets, psi and ksi dominate US structural codes, and kgf/cm² and kgf/mm² appear in legacy JIS and heavy-engineering documentation. Stress is the same physical dimension as pressure but a different engineering quantity — this category is mechanics-of-materials, not process pressure.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).
Related conversions
- ksi → psikilopound-force per square inch (stress) → pound-force per square inch (stress)
- Pa → psipascal (stress) → pound-force per square inch (stress)
- psi → Papound-force per square inch (stress) → pascal (stress)
- Pa → ksipascal (stress) → kilopound-force per square inch (stress)
- ksi → Pakilopound-force per square inch (stress) → pascal (stress)
- kPa → psikilopascal (stress) → pound-force per square inch (stress)