Kilopascals to PSI Converter (kPa to psi)

Canada, Australia and New Zealand print tire pressures in kilopascals on the vehicle placard, often next to psi, and many European placards add kPa beside bar, while gas-station air pumps and pocket gauges in North America still read psi. A kilopascal is 1,000 pascals, so 100 kPa is exactly one bar, and Canadian weather reports give sea-level air pressure as a figure close to 101 kPa.

The number molded into a tire's sidewall is a different thing from the placard: it is the most the tire can safely hold, not the pressure the car should run. Convert the placard figure, and check it when the tires are cold, before a drive has warmed the air inside.

How to use this tool

1. Type a value in the Kilopascal box to see it in pounds per square inch, or type in the Pound per Square Inch box to convert the other way.
2. Press ⇄ to swap the two units, or Load example for a typical value.
3. Check the charts below for common values; for other units, open the Pressure converter.

Formula

Pound per Square Inch (psi) = Kilopascal (kPa) × 0.14503773773

Kilopascal (kPa) = Pound per Square Inch (psi) × 6.89475729317

Both factors come from exact definitions: 1 pound per square inch = 6.89475729317 kilopascals and 1 kilopascal = 0.14503773773 pounds per square inch (shown to 12 significant digits).

Example

Two conversions worked with the same factors the converter uses:

230 kPa × 0.14503773773 ≈ 33.3587 psi

32 psi × 6.89475729317 ≈ 220.632 kPa

Kilopascal to Pound per Square Inch chart

Common values from kilopascals to pounds per square inch, rounded to four decimal places.

Pound per Square Inch to Kilopascal chart

The reverse direction for values people often look up.

Pressures printed in kilopascals

Quick mental estimate

Treat each 100 kPa as one bar, worth 14.5 psi: 230 kPa → 2.3 × 14.5 = 33.35 psi. The answer is only about 0.03% below the exact value, so this shortcut is as good as the converter for any gauge.

Use the converter or the charts when the exact figure matters.

The two units

Kilopascal (kPa): A kilopascal (kPa) is 1,000 pascals. It is used for tire pressures, weather and engineering in metric countries; standard sea-level air pressure is 101.325 kPa.

Pound per Square Inch (psi): One pound-force per square inch (psi) is about 6,894.76 pascals. A factor conversion is valid when both readings have the same reference; changing absolute pressure to gauge pressure (psig) also requires subtracting the reference pressure.