How many centipascals are in 1 psi?

1 psi equals 689,475.7293 centipascals, using the exact defined conversion factor rather than an estimate.

How do I convert psi to centipascal?

Multiply the psi value by 689475.7293. The converter above does this instantly to whatever precision you set.

How do I convert centipascal back to psi?

Use the reverse factor: 1 centipascal equals 0.0000014504 psi. You can also use the swap control in the converter above to flip the direction instantly.

What is a centipascal?

Centipascal (cPa) is a unit of pressure.

Is the psi to centipascal 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 Centipascals 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 Centipascals

PSI and Centipascal 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

centipascals = psi × 689475.729317

This factor comes from each unit's defined relationship to the category's base unit: 1 psi equals 6894.75729317 base units, and 1 centipascal equals 0.01 base units, so dividing one by the other gives the direct psi-to-centipascal factor of 689475.729317.

Simple example

1 psi × 689475.7293 = 689,475.7293 cPa

1 psi = 689,475.7293 centipascals.

Real-world example

35 psi × 689475.7293 = 24,131,650.53 cPa

35 psi = 24,131,650.53 centipascals.

Conversion table

PSI (psi)	Centipascal (cPa)
1 psi	689,475.7293 cPa
5 psi	3,447,378.647 cPa
10 psi	6,894,757.293 cPa
25 psi	17,236,893.23 cPa
50 psi	34,473,786.47 cPa
100 psi	68,947,572.93 cPa

Reverse conversion: Centipascal to PSI

1 cPa × 0.000001450377377 = 0.0000014504 psi

1 centipascal = 0.0000014504 psi.

psi = centipascals × 0.0000014503773773

For a page dedicated to this direction, see Centipascal 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 Centipascal (cPa)

Centipascal is 0.01 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 Centipascals Converter — psi to cPa

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