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Stress

psftokgf/mm²

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

Factor1 psf = 4.882428e-6 kgf/mm²

Converter

psf

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

Result
0.488243kgf/mm²

Rendered to 6 significant figures.

Formula

Formula
kgf/mm² = psf × 4.882428e-6

Multiply any value in pounds-force per square foot (stress) by 4.882428e-6 to obtain the value in kilograms-force per square millimetre (stress).

Worked example

Convert 100000 psf to kgf/mm².

  1. 01Start with 100000 psf.
  2. 02Multiply by the conversion factor: 100000 × 4.882428e-6 = 0.488243 kgf/mm².
Result100000 psf = 0.488243 kgf/mm²

Conversion table

psfkgf/mm²
14.8824e-6
29.7649e-6
52.4412e-5
104.8824e-5
209.7649e-5
500.00024412
1000.00048824
2000.00097649
5000.0024412
10000.0048824

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from psf to kgf/mm²?
1 psf equals 4.882428e-6 kgf/mm². To convert, multiply the value in pounds-force per square foot (stress) by 4.882428e-6.
How do I convert 1 psf to kgf/mm²?
1 psf = 4.88243e-6 kgf/mm². For any value, multiply by 4.882428e-6.
How do I convert kgf/mm² back to psf?
Divide by the same factor — or equivalently, multiply by 204816.1. So 1 kgf/mm² = 204816 psf.
When would I need to convert pound-force per square foot (stress) to kilogram-force per square millimetre (stress)?
Stress conversions between psf and kgf/mm² 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).

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