How many kilopascals are in 1 psi?

1 psi equals 6.894757293 kilopascals, using the exact defined conversion factor rather than an estimate.

How do I convert psi to kilopascal?

Multiply the psi value by 6.894757293. The converter above does this instantly to whatever precision you set.

How do I convert kilopascal back to psi?

Use the reverse factor: 1 kilopascal equals 0.1450377377 psi. You can also use the swap control in the converter above to flip the direction instantly.

What is a kilopascal?

Kilopascal (kPa) is a unit of pressure.

Is the psi to kilopascal conversion exact?

Yes. PSI (pounds-force per square inch) equals exactly 6,894.757293168 pascals. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.

PSI to Kilopascals Converter

Q: What is a psi?

PSI (psi) measures pressure. PSI (pounds-force per square inch) equals exactly 6,894.757293168 pascals. It is classified as a US/imperial customary unit.

About Converting PSI to Kilopascals

PSI and Kilopascal both show up on pressure gauges — psi is standard on US tire and tool specifications, while bar is the everyday pressure unit across most of the rest of the world. PSI is most often used for tire pressure specifications in the us.

Formula

kilopascals = psi × 6.89475729317

This factor comes from each unit's defined relationship to the category's base unit: 1 psi equals 6894.75729317 base units, and 1 kilopascal equals 1000 base units, so dividing one by the other gives the direct psi-to-kilopascal factor of 6.89475729317.

Simple example

1 psi × 6.894757293 = 6.894757293 kPa

1 psi = 6.894757293 kilopascals.

Real-world example

35 psi × 6.894757293 = 241.3165053 kPa

35 psi = 241.3165053 kilopascals.

Conversion table

PSI (psi)	Kilopascal (kPa)
1 psi	6.894757293 kPa
5 psi	34.47378647 kPa
10 psi	68.94757293 kPa
25 psi	172.3689323 kPa
50 psi	344.7378647 kPa
100 psi	689.4757293 kPa

Reverse conversion: Kilopascal to PSI

6.894757293 kPa × 0.1450377377 = 1 psi

6.894757293 kilopascals = 1 psi.

psi = kilopascals × 0.14503773773

For a page dedicated to this direction, see Kilopascal to PSI.

Understanding the PSI

PSI (psi) measures pressure. PSI (pounds-force per square inch) equals exactly 6,894.757293168 pascals. It is classified as a US/imperial customary unit.

Where it's used: United States (standard pressure unit for tires, tools, and plumbing)

Uses of the PSI today

Tire pressure specifications in the US
Hydraulic and pneumatic system ratings
Plumbing, compressed-air tools, and industrial equipment ratings

History of the PSI

PSI is a derived unit from the pound-force and the inch, both themselves standardized through English and later international agreements rather than invented as a pressure unit from scratch.

It became the default pressure unit in US engineering as pound-force and inch-based measurement dominated American industry through the 19th and 20th centuries, and it remains in everyday use for tires and tools even as most other measurements in the US context stay imperial.

Historical origin. PSI was not the invention of a single named person; it developed through the process described above.

Understanding the Kilopascal (kPa)

Kilopascal is 1000 pascal units.

PSI — sources

NIST Special Publication 811 — Guide for the Use of the International System of Units — Documents conversion factors for psi and other US customary pressure units.

PSI to Kilopascals Converter — psi to kPa

Pressure Converter