Convert Torr to Kilopounds per Square Inch
Convert Torr (Torr) to Kilopounds per Square Inch (ksi) instantly and accurately.
Conversion Formula
ksi = Torr × 1.933677470e-5
About Torr
The torr is defined as exactly 1/760 of a standard atmosphere ≈ 133.322 Pa - effectively replacing mmHg with an exact definition. Named after Evangelista Torricelli (1608-1647), inventor of the barometer. Vacuum science universally uses torr: rough vacuum 760-1 torr; medium vacuum 1-10⁻³ torr; high vacuum 10⁻³-10⁻⁷ torr; ultra-high vacuum below 10⁻⁹ torr. UHV systems for surface science, particle accelerator beam tubes, and space simulation chambers reach 10⁻¹¹-10⁻¹² torr. 1 torr = 133.322 Pa.
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
| Torr (Torr) | Kilopounds per Square Inch (ksi) |
|---|---|
| 1 Torr | 1.934 × 10-5 ksi |
| 2 Torr | 3.867 × 10-5 ksi |
| 5 Torr | 9.668 × 10-5 ksi |
| 10 Torr | 0.000193368 ksi |
| 25 Torr | 0.000483419 ksi |
| 50 Torr | 0.000966839 ksi |
| 100 Torr | 0.00193368 ksi |