ksi
kip per square inch
Pressureexact by definition
The kip per square inch is exactly 1000 psi, or about 6.895 megapascals. It is exact in the same sense that psi is, being a decimal multiple of an exactly defined unit. A kip is 1000 pounds-force, and the ksi is the working unit of US structural steel and concrete design.
Watch out: Kip means kilopound-force, not kilogram and not kilonewton. A common slip is reading a 50 ksi steel yield strength as 50 MPa: the correct value is about 345 MPa, seven times larger. Steel grades to remember are A36 at 36 ksi (248 MPa) and A992 at 50 ksi (345 MPa).
| 1 ksi | 6,894.7573 kPa |
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