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Pressure

psftokgf/mm²

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

Factor1 psf = 4.882428e-6 kgf/mm²

Converter

psf

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

Result
4.88243kgf/mm²

Rendered to 6 significant figures.

Formula

Formula
kgf/mm² = psf × 4.882428e-6

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

Worked example

Convert 1.00000e+6 psf to kgf/mm².

  1. 01Start with 1.00000e+6 psf.
  2. 02Multiply by the conversion factor: 1.00000e+6 × 4.882428e-6 = 4.88243 kgf/mm².
Result1.00000e+6 psf = 4.88243 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 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 to kilogram-force per square millimetre?
Pressure conversions between psf and kgf/mm² are common when working with mixed-vendor instrumentation, when piping codes use different units to process datasheets, or when converting field readings into SI for hydraulic calculations.
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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