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Stress

psftokPa

Convert pounds-force per square foot (stress) (psf) to kilopascals (stress) (kPa).

Factor1 psf = 0.04788026 kPa

Converter

psf

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

Result
47.8803kPa

Rendered to 6 significant figures.

Formula

Formula
kPa = psf × 0.04788026

Multiply any value in pounds-force per square foot (stress) by 0.04788026 to obtain the value in kilopascals (stress).

Worked example

Convert 1000 psf to kPa.

  1. 01Start with 1000 psf.
  2. 02Multiply by the conversion factor: 1000 × 0.04788026 = 47.8803 kPa.
Result1000 psf = 47.8803 kPa

Conversion table

psfkPa
10.04788
20.095761
50.2394
100.4788
200.95761
502.394
1004.788
2009.5761
50023.94
100047.88

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from psf to kPa?
1 psf equals 0.04788026 kPa. To convert, multiply the value in pounds-force per square foot (stress) by 0.04788026.
How do I convert 1 psf to kPa?
1 psf = 0.0478803 kPa. For any value, multiply by 0.04788026.
How do I convert kPa back to psf?
Divide by the same factor — or equivalently, multiply by 20.88543. So 1 kPa = 20.8854 psf.
When would I need to convert pound-force per square foot (stress) to kilopascal (stress)?
Stress conversions between psf and kPa 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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