Pressure Converter (PSI ⇄ Bar ⇄ kPa)

Instantly convert between PSI, bar and kilopascals (kPa) using official international conversion factors. Ideal for tyre pressures, air compressors, hydraulic systems, engineering, pneumatic tools and industrial applications.

Supports all six conversions between PSI, bar and kPa with instant high-precision results.

Pressure

Select the unit of the value you entered.

What is a Pressure Converter?

The Pressure Converter (PSI ⇄ Bar ⇄ kPa) quickly converts between the three most widely used pressure units: pounds per square inch (PSI), bar, and kilopascals (kPa). It is designed for motorists, motorcyclists, cyclists, mechanics, engineers, technicians, plumbers, HVAC professionals, and anyone who needs accurate pressure conversions.

Whether you're checking tyre pressures, setting an air compressor, adjusting hydraulic equipment, inflating bicycle tyres, or comparing international specifications, this converter provides instant and accurate results in every direction.

What are PSI, Bar and kPa?

Different countries and industries use different pressure units:

• PSI (Pounds per Square Inch) – Mainly used in the United States and commonly displayed on tyres, air compressors, pneumatic tools and industrial equipment.
• Bar – Widely used across Europe for tyre pressures, compressed air systems, hydraulic equipment and industrial applications.
• kPa (Kilopascals) – The official SI (metric) unit of pressure used in science, engineering and by many vehicle manufacturers worldwide.

Supported Conversions

Official Conversion Factors

Conversion Formulas

• Bar = PSI × 0.0689476
• PSI = Bar × 14.5038
• kPa = PSI × 6.89476
• PSI = kPa ÷ 6.89476
• kPa = Bar × 100
• Bar = kPa ÷ 100
• US conversions use internationally recognised pressure standards.

Worked Examples

Example 1 — Car Tyre Pressure

• Recommended pressure = 32 PSI
• 32 PSI = 2.21 Bar
• 32 PSI = 220.63 kPa

Example 2 — Motorcycle Tyre

• Recommended pressure = 2.5 Bar
• 2.5 Bar = 36.26 PSI
• 2.5 Bar = 250 kPa

Example 3 — Air Compressor

• Compressor pressure = 100 PSI
• 100 PSI = 6.89 Bar
• 100 PSI = 689.48 kPa

Example 4 — Industrial System

• Pressure = 300 kPa
• 300 kPa = 3.00 Bar
• 300 kPa = 43.51 PSI

Common Tyre Pressures

PSI	Bar	kPa
26	1.79	179
28	1.93	193
30	2.07	207
32	2.21	221
34	2.34	234
36	2.48	248
38	2.62	262
40	2.76	276

Where Pressure Conversions Are Used

Common Mistakes

• Confusing PSI with bar or kPa.
• Using the wrong pressure unit for your equipment.
• Comparing vehicle specifications from different countries without converting.
• Rounding values too early.
• Using incorrect or outdated conversion factors.

This converter automatically applies internationally recognised conversion factors, ensuring fast, reliable and accurate pressure conversions every time.

Frequently Asked Questions

What is PSI?
PSI (Pounds per Square Inch) is a pressure unit primarily used in the United States and commonly found on tyres, compressors and pneumatic equipment.

What is bar?
Bar is a metric pressure unit widely used throughout Europe for tyre pressures, industrial machinery and engineering applications.

What is kPa?
Kilopascals (kPa) are the SI unit of pressure and are commonly used in science, engineering and vehicle specifications worldwide.

Which pressure unit should I use?
Always use the unit recommended by your vehicle, equipment or manufacturer. This converter makes it easy to switch between PSI, bar and kPa.

Is this converter accurate?
Yes. It uses official internationally recognised conversion factors for precise and consistent pressure calculations.

Can I use this converter for tyre pressures?
Yes. It is ideal for cars, motorcycles, bicycles, vans and commercial vehicles, as well as air compressors and other pressure-related equipment.

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