Convert Pounds per Square Foot to Inches of Mercury
Convert Pounds per Square Foot (lbf/ft²) to Inches of Mercury (inHg) instantly and accurately.
Conversion Formula
inHg = lbf/ft² × 0.01413903248
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.
About Inches of Mercury
One inch of mercury (inHg) ≈ 3,386 Pa - the primary barometric pressure unit in US aviation and meteorology. ASOS weather stations, METARs, and altimeter settings in the US report in inHg. Standard sea-level pressure is 29.92 inHg. Altimeters are set to local QNH in inHg to maintain altitude reference. US barometers for home weather stations display inHg. Typical pressure range: 28.5-31.0 inHg in continental weather systems. Record low: ~25.70 inHg (Typhoon Tip, 1979). 1 inHg = 3,386.39 Pa.
Quick Reference Table
| Pounds per Square Foot (lbf/ft²) | Inches of Mercury (inHg) |
|---|---|
| 1 lbf/ft² | 0.014139 inHg |
| 2 lbf/ft² | 0.0282781 inHg |
| 5 lbf/ft² | 0.0706952 inHg |
| 10 lbf/ft² | 0.14139 inHg |
| 25 lbf/ft² | 0.353476 inHg |
| 50 lbf/ft² | 0.706952 inHg |
| 100 lbf/ft² | 1.4139 inHg |