Convert Pascals to Kilopounds per Square Inch
Convert Pascals (Pa) to Kilopounds per Square Inch (ksi) instantly and accurately.
Conversion Formula
ksi = Pa × 1.450377377e-7
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 Kilopounds per Square Inch
One ksi (kilopound per square inch) = 1,000 psi ≈ 6.895 MPa - the standard engineering stress unit in the US. ASTM A36 structural steel: 36 ksi yield, 58-80 ksi tensile. ASTM A325 high-strength bolts: 92 ksi proof load. AISC steel construction tables, FAA/MIL-SPEC aerospace allowables, and ASME Section VIII pressure vessel design all use ksi. Fracture toughness (K_IC) for steels: 50-200 ksi·√in. Convenient because it keeps large structural stresses as manageable 3-digit numbers. 1 ksi = 6.895 MPa.
Quick Reference Table
| Pascals (Pa) | Kilopounds per Square Inch (ksi) |
|---|---|
| 1 Pa | 1.45 × 10-7 ksi |
| 2 Pa | 2.901 × 10-7 ksi |
| 5 Pa | 7.252 × 10-7 ksi |
| 10 Pa | 1.45 × 10-6 ksi |
| 25 Pa | 3.626 × 10-6 ksi |
| 50 Pa | 7.252 × 10-6 ksi |
| 100 Pa | 1.45 × 10-5 ksi |