PSI and kilopascal pressure conversion
PSI means pound-force per square inch and is commonly used for tire, pneumatic, and hydraulic pressure. The kilopascal is an SI-derived pressure unit equal to 1,000 pascals.
This converter changes only the unit representation. A gauge-pressure value remains gauge pressure, and an absolute-pressure value remains absolute pressure.
How to convert PSI to kPa
- Enter PSI: Type a value in the PSI field to see the corresponding kilopascals.
- Or enter kPa: Edit the kilopascal field to convert in the reverse direction.
- Preserve pressure basis: Do not mix gauge and absolute pressure without adding or subtracting atmospheric pressure.
Formula and variables
Multiply psi by the conversion factor for kPa, or divide kPa by the same factor for psi.
kPa = psi × 6.894757293168; psi = kPa / 6.894757293168- psi — Pounds-force per square inch
- US customary pressure unit (lbf/in²)
- kPa — Kilopascal
- One thousand pascals (kPa)
Standard-atmosphere pressure in PSI
Convert 14.6959 psi to kilopascals.
- Pressure
- 14.6959 psi
- kPa = 14.6959 × 6.894757293168
Result: The pressure is approximately 101.325 kPa.
This is close to one standard atmosphere; rounding depends on the input precision.
Understanding your results
Keep gauge and absolute values distinct
Unit conversion does not change the reference from which pressure was measured.
- PSIG denotes gauge pressure.
- PSIA denotes absolute pressure.
- The same distinction applies to kPa gauge and kPa absolute.
Assumptions
- The entered number is a pressure value.
- The same gauge or absolute reference is retained after conversion.
Limitations
- Does not convert between gauge and absolute pressure.
- Does not account for instrument accuracy or significant-figure requirements.
Common mistakes
- Using 0.145 instead of 6.895 when converting psi to kPa.
- Treating gauge and absolute pressure as interchangeable.
- Reporting more digits than the source measurement supports.
Practical use cases
Tire and pneumatic pressure
Convert specifications published in PSI or kPa.
Engineering calculations
Normalize pressure inputs before using an SI-based equation.
Frequently asked questions
How many kPa are in 1 PSI?
One psi is approximately 6.894757293168 kPa.
Is 100 kPa about 14.5 PSI?
Yes. 100 kPa is approximately 14.5038 psi.
Does this convert PSIG to kPa absolute?
No. It converts the unit only; gauge-to-absolute conversion additionally requires local atmospheric pressure.
Sources and review
- NIST Guide to the SI, Appendix B.9 — National Institute of Standards and Technology. Accessed 2026-07-13.
Reviewed 2026-07-13.