About This Calculator
This calculator converts pressure between pounds per square foot (psf) and pounds per square inch (psi) using the exact conversion factor 1 psi = 144 psf. It is useful in structural, mechanical, and fluid systems.
How It Works
- Select the conversion direction: PSF to PSI or PSI to PSF.
- Enter a numeric pressure value.
- The following formulas are applied:
psi = psf ÷ 144
psf = psi × 144
PSF and PSI Conversion Table
| PSF | PSI |
|---|---|
| 10 psf | 0.0694 psi |
| 50 psf | 0.3472 psi |
| 100 psf | 0.6944 psi |
| 250 psf | 1.7361 psi |
| 500 psf | 3.4722 psi |
| 1000 psf | 6.9444 psi |
Frequently Asked Questions
Why convert between psf and psi?
To ensure compatibility across systems that use different pressure units, especially in construction and engineering applications.
Is the result accurate?
Yes. It uses the exact standard: 1 psi = 144 psf.
Can I convert both ways?
Yes. This calculator supports both psf to psi and psi to psf conversions.