Convert Pascals to Pounds per Square Foot
Convert Pascals (Pa) to Pounds per Square Foot (lbf/ft²) instantly and accurately.
Conversion Formula
lbf/ft² = Pa × 0.02088543423
About Pascals
The pascal (Pa) is the SI unit of pressure - 1 N/m², named after Blaise Pascal (1623-1662). Standard sea-level atmosphere ≈ 101,325 Pa. One pascal is very small: roughly the pressure of a single banknote lying flat. Pascal is simultaneously the SI unit for mechanical stress and elastic modulus: structural steel Young's modulus ~200 GPa; rubber shear modulus ~0.5 MPa. Used universally in fluid mechanics, acoustics, atmospheric science, and materials engineering. 1 Pa = 1 N/m².
About Pounds per Square Foot
One pound per square foot (psf) ≈ 47.88 Pa - the standard structural engineering load unit in US practice. Building codes specify design loads in psf: residential floors 40 psf; office buildings 50-80 psf; assembly areas 100+ psf; snow loads can exceed 100 psf. Wind pressure on building facades, soil bearing capacity for shallow foundations, and lateral earth pressure in retaining walls are all in psf. The related unit ksf (1,000 psf = 47.88 kPa) covers higher-capacity soils and deep foundations. 1 psf = 47.88 Pa.
Quick Reference Table
| Pascals (Pa) | Pounds per Square Foot (lbf/ft²) |
|---|---|
| 1 Pa | 0.0208854 lbf/ft² |
| 2 Pa | 0.0417709 lbf/ft² |
| 5 Pa | 0.104427 lbf/ft² |
| 10 Pa | 0.208854 lbf/ft² |
| 25 Pa | 0.522136 lbf/ft² |
| 50 Pa | 1.04427 lbf/ft² |
| 100 Pa | 2.08854 lbf/ft² |