Convert Hectopascals to Pounds per Square Foot
Convert Hectopascals (hPa) to Pounds per Square Foot (lbf/ft²) instantly and accurately.
Conversion Formula
lbf/ft² = hPa × 2.088543423
About Hectopascals
A hectopascal (hPa) = 100 Pa = 1 mbar - the WMO-official SI-compatible meteorological pressure unit since 1986, replacing millibar with no numerical change. All modern surface observations (METAR, SYNOP), digital barometers, aviation weather, and weather apps report in hPa. QNH altimeter settings outside North America are in hPa. ICAO standard sea-level pressure is 1013.25 hPa. Continental high-pressure record exceeds 1084 hPa; Typhoon Tip (1979) holds the low record at ~870 hPa. 1 hPa = 100 Pa.
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
| Hectopascals (hPa) | Pounds per Square Foot (lbf/ft²) |
|---|---|
| 1 hPa | 2.08854 lbf/ft² |
| 2 hPa | 4.17709 lbf/ft² |
| 5 hPa | 10.4427 lbf/ft² |
| 10 hPa | 20.8854 lbf/ft² |
| 25 hPa | 52.2136 lbf/ft² |
| 50 hPa | 104.427 lbf/ft² |
| 100 hPa | 208.854 lbf/ft² |