🔧 PSI to kPa Converter
Instantly convert between Pounds per Square Inch (PSI) and Kilopascals (kPa). Perfect for tire pressure, industrial applications, and engineering calculations. Includes conversion formula, step-by-step breakdown, and a quick reference table.
What Is PSI and kPa?
PSI (pounds per square inch) is a unit of pressure commonly used in the United States and other countries that follow the imperial system. It measures the amount of force (in pounds) applied to an area of one square inch. PSI is widely used for tire pressure, hydraulic systems, pneumatic tools, and industrial applications.
kPa (kilopascal) is a metric unit of pressure equal to 1,000 pascals (Pa). It is part of the International System of Units (SI) and is commonly used in engineering, automotive, meteorology, and tire pressure in most countries around the world.
The conversion between PSI and kPa is essential for:
- Tire pressure: Many vehicles display tire pressure in both PSI and kPa.
- Engineering: Converting between imperial and metric units in design and manufacturing.
- HVAC and plumbing: Pressure measurements in heating, ventilation, and air conditioning systems.
- Scuba diving and meteorology: Pressure readings in various contexts.
How to Convert PSI to kPa
The conversion formulas are:
kPa = PSI × 6.89476
PSI = kPa × 0.1450377
or PSI = kPa ÷ 6.89476
The conversion factor 6.89476 is derived from the exact relationship between pounds-force and newtons, and between square inches and square meters.
For example, to convert 32 PSI (common tire pressure) to kPa:
kPa = 32 × 6.89476
kPa = 220.63 kPa
To convert 220 kPa back to PSI:
PSI = 220 × 0.1450377
PSI = 31.91 PSI
Why Use This Converter?
- Instant results: Convert pressure between PSI and kPa in real-time.
- Bidirectional: Convert from PSI to kPa or kPa to PSI with a single click.
- Step-by-step breakdown: Understand exactly how the conversion is calculated.
- Common reference table: Quickly check pressure values for tire pressure, industrial applications, and more.
- Free & private: No registration, no data storage , all calculations are done in your browser.
❓ PSI to kPa FAQ
What is the formula to convert PSI to kPa?
The formula is kPa = PSI × 6.89476. For example, 32 PSI × 6.89476 = 220.63 kPa.
What is the formula to convert kPa to PSI?
The formula is PSI = kPa × 0.1450377 or PSI = kPa ÷ 6.89476. For example, 220 kPa × 0.1450377 = 31.91 PSI.
What is the difference between PSI and kPa?
PSI (pounds per square inch) is an imperial unit of pressure commonly used in the United States. kPa (kilopascal) is a metric unit used in most other countries. 1 PSI equals approximately 6.89476 kPa.
What is the typical tire pressure in PSI and kPa?
Most passenger car tires require 30–35 PSI (207–241 kPa). The exact value is usually printed on the driver's side door jamb or in the owner's manual.
What is standard atmospheric pressure in PSI and kPa?
Standard atmospheric pressure at sea level is 14.696 PSI or 101.325 kPa. This is also equivalent to 1 atm or 1.01325 bar.
How many kPa are in 1 PSI?
1 PSI equals 6.89476 kPa.
How many PSI are in 1 kPa?
1 kPa equals 0.1450377 PSI (approximately 0.145 PSI).
What is the conversion factor between PSI and kPa?
The conversion factor is 6.89476. To convert PSI to kPa, multiply by 6.89476. To convert kPa to PSI, divide by 6.89476.
How accurate is this converter?
This converter provides highly accurate results using the standard conversion factor 6.89476. 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.