Stress
N/mm²toksi
Convert newtons per square millimetre (stress) (N/mm²) to kilopounds-force per square inch (stress) (ksi).
Factor1 N/mm² = 0.1450377 ksi
Converter
N/mm²
Accepts numbers or expressions, e.g. 150 + 14.7
Result
ksi
Rendered to 6 significant figures.
Formula
Formula
ksi = N/mm² × 0.1450377
Multiply any value in newtons per square millimetre (stress) by 0.1450377 to obtain the value in kilopounds-force per square inch (stress).
Worked example
Convert 1000 N/mm² to ksi.
- 01Start with 1000 N/mm².
- 02Multiply by the conversion factor: 1000 × 0.1450377 = 145.038 ksi.
Result1000 N/mm² = 145.038 ksi
Conversion table
| N/mm² | ksi |
|---|---|
| 1 | 0.14504 |
| 2 | 0.29008 |
| 5 | 0.72519 |
| 10 | 1.4504 |
| 20 | 2.9008 |
| 50 | 7.2519 |
| 100 | 14.504 |
| 200 | 29.008 |
| 500 | 72.519 |
| 1000 | 145.04 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from N/mm² to ksi?
1 N/mm² equals 0.1450377 ksi. To convert, multiply the value in newtons per square millimetre (stress) by 0.1450377.
How do I convert 1 N/mm² to ksi?
1 N/mm² = 0.145038 ksi. For any value, multiply by 0.1450377.
How do I convert ksi back to N/mm²?
Divide by the same factor — or equivalently, multiply by 6.894757. So 1 ksi = 6.89476 N/mm².
When would I need to convert newton per square millimetre (stress) to kilopound-force per square inch (stress)?
Stress conversions between N/mm² 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 → N/mm²kilopound-force per square inch (stress) → newton per square millimetre (stress)
- Pa → ksipascal (stress) → kilopound-force per square inch (stress)
- ksi → Pakilopound-force per square inch (stress) → pascal (stress)
- Pa → N/mm²pascal (stress) → newton per square millimetre (stress)
- N/mm² → Panewton per square millimetre (stress) → pascal (stress)
- MPa → ksimegapascal (stress) → kilopound-force per square inch (stress)