🔧 kPa to PSI Converter
Instantly convert pressure from Kilopascals (kPa) to Pounds per Square Inch (PSI). 1 kPa is exactly 0.145038 PSI. Perfect for tire pressure, industrial applications, and engineering calculations.
What Is a Kilopascal (kPa)?
The kilopascal (kPa) is a metric unit of pressure equal to 1,000 pascals (Pa). It is the standard unit for measuring pressure in most countries outside the United States. kPa is commonly used in:
- Tire pressure — most vehicles outside the US use kPa for tire pressure.
- Weather and meteorology — atmospheric pressure is often measured in kPa.
- Industrial applications — hydraulic systems, pneumatic tools, and pressure vessels.
- Scuba diving — tank pressure is often measured in kPa.
What Is PSI?
PSI (Pounds per Square Inch) is a unit of pressure based on avoirdupois units. It measures the amount of force (in pounds) applied to one square inch of area. PSI is commonly used in:
- United States and UK — the primary pressure unit for tire pressure, industrial, and automotive applications.
- Hydraulic systems — pump pressure, fuel injection, and water supply.
- Scuba diving — tank pressure is often measured in PSI.
How to Convert kPa to PSI
The formula to convert kilopascals to PSI is:
PSI = kPa × 0.145038
or PSI = kPa ÷ 6.89476
For example, to convert 100 kPa to PSI:
PSI = 100 × 0.145038
PSI = 14.5038 PSI
To convert a common tire pressure of 220 kPa to PSI:
PSI = 220 × 0.145038
PSI = 31.908 PSI
Why Use This Converter?
- Instant results: Get accurate kPa to PSI conversions in real-time.
- Step-by-step breakdown: See exactly how the conversion is calculated.
- Common reference table: Quickly check pressure values from 1 kPa to 300 kPa.
- Free & private: No registration, no data storage — all calculations are done in your browser.
❓ kPa to PSI FAQ
What is the formula to convert kPa to PSI?
The formula is PSI = kPa × 0.145038. Alternatively, you can use PSI = kPa ÷ 6.89476.
How many PSI is 1 kPa?
1 kPa is equal to 0.145038 PSI.
How many kPa is 1 PSI?
1 PSI is equal to 6.89476 kPa.
What is the difference between kPa and PSI?
kPa (kilopascal) is a metric unit used in most countries. PSI (Pounds per Square Inch) is an imperial unit used primarily in the United States and UK. 1 kPa is approximately equal to 0.145 PSI.
What is the typical tire pressure in kPa and PSI?
Most car tires require between 200–250 kPa, which is equivalent to 29–36 PSI.
What is standard atmospheric pressure in kPa and PSI?
Standard atmospheric pressure at sea level is 101.325 kPa or 14.696 PSI.
How accurate is this converter?
This converter uses the exact conversion factor 0.14503773773020923 for high accuracy. You can adjust the decimal precision to suit your needs.
Is this converter free?
Yes, this converter is completely free to use. No registration or personal data storage is required.
Where is kPa commonly used?
kPa is commonly used in Europe, Asia, Australia, and most other countries for tire pressure, meteorology, engineering, and scuba diving.
Where is PSI commonly used?
PSI is commonly used in the United States, United Kingdom, and other countries for tire pressure, industrial applications, hydraulics, and scuba diving.