Stress
psftoMpsi
Convert pounds-force per square foot (stress) (psf) to megapounds-force per square inch (stress) (Mpsi).
Factor1 psf = 6.944444e-9 Mpsi
Converter
psf
Accepts numbers or expressions, e.g. 150 + 14.7
Result
Mpsi
Rendered to 6 significant figures.
Formula
Formula
Mpsi = psf × 6.944444e-9
Multiply any value in pounds-force per square foot (stress) by 6.944444e-9 to obtain the value in megapounds-force per square inch (stress).
Worked example
Convert 1e+8 psf to Mpsi.
- 01Start with 1e+8 psf.
- 02Multiply by the conversion factor: 1e+8 × 6.944444e-9 = 0.694444 Mpsi.
Result1e+8 psf = 0.694444 Mpsi
Conversion table
| psf | Mpsi |
|---|---|
| 1 | 6.9444e-9 |
| 2 | 1.3889e-8 |
| 5 | 3.4722e-8 |
| 10 | 6.9444e-8 |
| 20 | 1.3889e-7 |
| 50 | 3.4722e-7 |
| 100 | 6.9444e-7 |
| 200 | 1.3889e-6 |
| 500 | 3.4722e-6 |
| 1000 | 6.9444e-6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from psf to Mpsi?
1 psf equals 6.944444e-9 Mpsi. To convert, multiply the value in pounds-force per square foot (stress) by 6.944444e-9.
How do I convert 1 psf to Mpsi?
1 psf = 6.94444e-9 Mpsi. For any value, multiply by 6.944444e-9.
How do I convert Mpsi back to psf?
Divide by the same factor — or equivalently, multiply by 1.44e+8. So 1 Mpsi = 1.44e+8 psf.
When would I need to convert pound-force per square foot (stress) to megapound-force per square inch (stress)?
Stress conversions between psf and Mpsi 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
- Mpsi → psfmegapound-force per square inch (stress) → pound-force per square foot (stress)
- Pa → psfpascal (stress) → pound-force per square foot (stress)
- psf → Papound-force per square foot (stress) → pascal (stress)
- kPa → psfkilopascal (stress) → pound-force per square foot (stress)
- psf → kPapound-force per square foot (stress) → kilopascal (stress)
- psi → psfpound-force per square inch (stress) → pound-force per square foot (stress)