KSI to PSI Converter
Unit ConversionConvert ksi to psi. 1 ksi equals exactly 1,000 psi, with a conversion table and the reverse conversion.
PSI
Equivalent pressure or stress in psi
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SponsoredThis converter turns ksi into psi. Enter a value and the result updates as you type. 1 ksi equals exactly 1,000 psi.
KSI means kips per square inch, and a kip is 1,000 pounds of force. So 1 ksi is exactly 1,000 psi, and converting is a matter of moving the decimal point three places. Engineers use ksi to keep strength and stress values short, since the same values in psi often run to five or more digits.
The result shows 0 for a negative entry. A compressive stress is sometimes written as negative; convert its size here and keep the sign yourself. The result is rounded to 2 decimal places.
How to Convert KSI to PSI
To convert ksi to psi, multiply by 1,000. For example, 36 ksi equals 36,000 psi.
To go from psi back to ksi, divide psi by 1,000.
KSI to PSI Conversion Table
Common ksi values converted to psi, rounded to 2 decimal places.
| KSI | PSI |
|---|---|
| 0.5 ksi | 500 psi |
| 1 ksi | 1,000 psi |
| 2.5 ksi | 2,500 psi |
| 5 ksi | 5,000 psi |
| 10 ksi | 10,000 psi |
| 20 ksi | 20,000 psi |
| 36 ksi | 36,000 psi |
| 50 ksi | 50,000 psi |
| 60 ksi | 60,000 psi |
| 80 ksi | 80,000 psi |
| 100 ksi | 100,000 psi |
| 150 ksi | 150,000 psi |
Kips and KSI
NIST SP 811 defines the kip as 1,000 pounds-force (lbf). KSI is therefore a scaled psi, the same way a kilopascal is a scaled pascal: 1 ksi equals exactly 1,000 psi. Other pressure units have exact values too: 1 standard atmosphere is exactly 101,325 pascals, and 1 bar is exactly 100,000 pascals.
Stresses in psi from the Bending Stress Calculator turn into ksi by dividing by 1,000. Shear strength in ksi also drives the force needed to punch sheet metal, which the Punch Force Calculator estimates.
Frequently Asked Questions
What is 150 ksi in psi?
150 ksi equals exactly 150,000 psi.
What does ksi stand for?
ksi stands for kips per square inch, also written kip/in². A kip is a kilopound, 1,000 pounds of force.
How do I convert psi to ksi?
Divide psi by 1,000. For example, 50,000 psi is 50 ksi.
Is the KSI to PSI factor exact?
Yes. 1 ksi equals exactly 1,000 psi, because a kip is 1,000 pounds of force. The calculator still rounds the displayed result to 2 decimal places.
What happens if I enter a negative value?
It shows 0. For a compressive stress written with a minus sign, enter the size without the sign and add the sign back to the result.
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