▸ processconvert
Stress

kgf/mm²topsi

Convert kilograms-force per square millimetre (stress) (kgf/mm²) to pounds-force per square inch (stress) (psi).

Factor1 kgf/mm² = 1422.334 psi

Converter

kgf/mm²

Accepts numbers or expressions, e.g. 150 + 14.7

Result
1422.33psi

Rendered to 6 significant figures.

Formula

Formula
psi = kgf/mm² × 1422.334

Multiply any value in kilograms-force per square millimetre (stress) by 1422.334 to obtain the value in pounds-force per square inch (stress).

Worked example

Convert 1 kgf/mm² to psi.

  1. 01Start with 1 kgf/mm².
  2. 02Multiply by the conversion factor: 1 × 1422.334 = 1422.33 psi.
Result1 kgf/mm² = 1422.33 psi

Conversion table

kgf/mm²psi
11422.3
22844.7
57111.7
1014223
2028447
5071117
1001.4223e+5
2002.8447e+5
5007.1117e+5
10001.4223e+6

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from kgf/mm² to psi?
1 kgf/mm² equals 1422.334 psi. To convert, multiply the value in kilograms-force per square millimetre (stress) by 1422.334.
How do I convert 1 kgf/mm² to psi?
1 kgf/mm² = 1422.33 psi. For any value, multiply by 1422.334.
How do I convert psi back to kgf/mm²?
Divide by the same factor — or equivalently, multiply by 0.0007030696. So 1 psi = 0.00070307 kgf/mm².
When would I need to convert kilogram-force per square millimetre (stress) to pound-force per square inch (stress)?
Stress conversions between kgf/mm² and psi 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