Convert Kilopascals to Pounds per Square Foot
Convert Kilopascals (kPa) to Pounds per Square Foot (lbf/ft²) instantly and accurately.
Conversion Formula
lbf/ft² = kPa × 20.88543423
About Kilopascals
A kilopascal (kPa) = 1,000 Pa - the practical everyday SI pressure unit for moderate pressures. Car tyre inflation: 200-250 kPa (29-36 psi); truck tyres 550-830 kPa. Blood pressure in SI countries: 16/10.7 kPa (= 120/80 mmHg). Systolic blood pressure 16 kPa. Carbonated beverages are packaged at 200-500 kPa CO₂. Medical oxygen cylinders at 15,000 kPa; scuba cylinders 200-300 bar = 20,000-30,000 kPa. 1 kPa = 1,000 Pa = 0.01 bar = 0.145 psi.
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
| Kilopascals (kPa) | Pounds per Square Foot (lbf/ft²) |
|---|---|
| 1 kPa | 20.8854 lbf/ft² |
| 2 kPa | 41.7709 lbf/ft² |
| 5 kPa | 104.427 lbf/ft² |
| 10 kPa | 208.854 lbf/ft² |
| 25 kPa | 522.136 lbf/ft² |
| 50 kPa | 1044.27 lbf/ft² |
| 100 kPa | 2088.54 lbf/ft² |