Kilopascals to PSI Converter
Unit ConversionConvert kilopascals to psi. 1 kilopascal is about 0.145038 psi, with a conversion table and the reverse conversion.
PSI
Equivalent pressure in pounds per square inch
Bar
1.0000
Equivalent pressure in bar
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SponsoredThis converter turns kilopascals into psi (kPa to psi). Enter a value and the result updates as you type. 1 kilopascal is about 0.145038 psi.
1 kilopascal is exactly 1,000 pascals. The psi is defined from the avoirdupois pound, standard gravity and the inch, which works out to about 6,894.757 pascals. So 1 psi is about 6.895 kPa, and 1 kPa is about 0.145 psi.
The result shows 0 for a negative entry, so for vacuum gauge readings use the Kilopascal Converter listed below, which accepts negative values down to a full vacuum. The result is rounded to 4 decimal places.
How to Convert Kilopascals to PSI
To convert kilopascals to psi, multiply by about 0.1450377, or divide by about 6.894757. For example, 220 kPa is about 31.9083 psi.
To go from psi back to kilopascals, multiply psi by about 6.894757.
Kilopascals to PSI Conversion Table
Common kPa values converted to psi, rounded to 4 decimal places.
| Kilopascals | PSI |
|---|---|
| 1 kPa | 0.145 psi |
| 10 kPa | 1.4504 psi |
| 50 kPa | 7.2519 psi |
| 100 kPa | 14.5038 psi |
| 150 kPa | 21.7557 psi |
| 180 kPa | 26.1068 psi |
| 200 kPa | 29.0075 psi |
| 220 kPa | 31.9083 psi |
| 240 kPa | 34.8091 psi |
| 250 kPa | 36.2594 psi |
| 300 kPa | 43.5113 psi |
| 500 kPa | 72.5189 psi |
| 1,000 kPa | 145.0377 psi |
kPa and PSI on Tire Placards
NHTSA notes that the recommended tire pressure on a vehicle's placard and in the owner's manual is given in psi and, in some cases, in kPa. Both are gauge readings. A placard value of 220 kPa is about 31.9 psi, and 240 kPa is about 34.8 psi. The calculator also shows bar, since European placards often use it.
Weather reports in Canada give air pressure in kilopascals: Environment Canada shows readings such as 101.2 kPa, which is about 14.68 psi.
The psi side of the conversion rests on the pound-force, which the Pound-Force to Newtons Converter expresses in newtons. Tire dimensions, rather than pressures, are covered by the Tire Size Calculator.
Frequently Asked Questions
What is 30 to 35 psi in kPa?
30 psi is about 206.84 kPa and 35 psi is about 241.32 kPa, so 30 to 35 psi is roughly 207 to 241 kPa.
What is 100 kPa in psi?
100 kPa is about 14.5038 psi.
How do I convert psi to kPa?
Multiply psi by about 6.894757. For example, 50 psi is about 344.74 kPa.
Is the Kilopascals to PSI factor exact?
The factor is fixed by definitions, so it never changes, but it has no finite decimal form. 1 kilopascal is about 0.145038 psi. The calculator uses the full value and rounds only the result it shows.
What happens if I enter a negative value?
It shows 0. This page treats values as pressures of zero or more. The Kilopascal Converter in the list below accepts negative gauge readings down to a full vacuum.
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