ksi to PSI Converter
Enter the pressure in ksi below to convert it to psi.
Convert ksi to PSI
Enter a value in ksi (ksi) to convert to psi (psi).
Kilopounds per Square Inch to Pounds per Square Inch Conversion Table
Table showing various kilopounds per square inch measurements converted to psi. Click any preset value or arrow to load it into the converter.
| ksi (ksi) | PSI (psi) |
|---|---|
| 1 ksi | 1,000 psi |
| 2 ksi | 2,000 psi |
| 5 ksi | 5,000 psi |
| 10 ksi | 10,000 psi |
| 15 ksi | 15,000 psi |
| 20 ksi | 20,000 psi |
| 25 ksi | 25,000 psi |
| 30 ksi | 30,000 psi |
| 50 ksi | 50,000 psi |
| 75 ksi | 75,000 psi |
How to Convert ksi to PSI
To convert ksi to psi, multiply the pressure by the following conversion ratio: 1,000 psi/kilopounds per square inch.
Since one kilopounds per square inch is equal to 1,000 psi, you can use this simple formula to convert:
The pressure in psi is equal to the pressure in ksi multiplied by 1,000.
For example, here's how to convert 50 ksi to psi using the formula above.
How Many PSI Are in a Kilopounds per Square Inch?
There are 1,000 psi in a kilopounds per square inch, which is why we use this value in the formula above.
Our kilopounds per square inch to pounds per square inch calculator automatically converts your pressure measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
ksi and psi are both units used to measure pressure. Keep reading to learn more about each unit.
What Is a Kilopounds per Square Inch?
A kilopounds per square inch is a unit of pressure equal to 6,894,757.293168 pascals (Pa), the base unit for pressure. Materials engineering yield strength unit equal to 1,000 PSI (6.89476 MPa). [1]
The kilopounds per square inch is classified as a US customary unit of pressure. ksi can be abbreviated as ksi; for example, 1 kilopounds per square inch can be written as 1 ksi.
In the metric system, "kilo" is the standard SI prefix for thousands, or 10³. This makes the kilopounds per square inch (ksi) a convenient decimal multiple of the pascal (Pa).
In practice, ksi (ksi) are widely used across large-scale industrial, bulk, and macro-level pressure specifications within US customary workflows, engineering documentation, and technical data sheets.
What Is a Pounds per Square Inch?
A pounds per square inch is a unit of pressure equal to 6,894.7572932 pascals (Pa), the base unit for pressure. Imperial & US pressure unit equal to 1 pound-force per square inch (6.89476 kPa). [2]
The pounds per square inch is classified as a US customary and imperial unit of pressure. PSI can be abbreviated as psi; for example, 1 pounds per square inch can be written as 1 psi.
When working with psi (psi) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, psi (psi) are widely used across large-scale industrial, bulk, and macro-level pressure specifications within US customary and imperial workflows, engineering documentation, and technical data sheets.
When converting pressure between ksi (ksi) and psi (psi), keep full floating-point precision (1 ksi = 1,000 psi; 1 psi = 0.001 ksi) during intermediate calculations and round only the final pounds per square inch figure to match your instrument tolerance.
More Kilopounds per Square Inch & Pounds per Square Inch Conversions
Need to calculate in the opposite direction? Use our psi to ksi calculator to switch your starting unit immediately. You can also explore related tools such as converting psi to ksi, converting bars to psi, or converting kilopascals to psi.
Frequently Asked Questions
References
- [1]NIST SP 811 StandardNIST SP 811 (NIST SP 811 App. B.9 (Pressure & Stress))·Pressure Metrology Standard — ksi (ksi) to PSI (psi)
- [2]NIST CUU SpecificationNIST CUU (Derived SI Unit: Pascal (Pa))·Unit Specifications: Kilopounds per Square Inch (ksi) (ksi) & Pounds per Square Inch (psi)
- [3]BIPM ReferenceBIPM (SI Brochure (9th Ed.) — Mechanics)·Conversion Factors & Mathematical Basis (ksi to psi)