Background

Pressure conversion is essential in engineering, automotive, diving, and medicine. PSI in US industrial, bar in European engineering, kPa in science, mmHg in medicine.

Common Units and Uses

PSI for tyre pressure/US industry. Bar for EU engineering/diving. kPa for science/automotive. atm = standard atmospheric pressure.

Tyre Pressure Units

30–35 psi = 200–240 kPa = 2.0–2.4 bar. All express the same range — converting correctly is a safety issue.

How to Use This Calculator

1. Select 'Pressure'

   Choose the category from the dropdown.

2. Select your source unit

   Pick the unit you're converting from.

3. Enter the value

   Type the number. Results update instantly.

4. Select your target unit

   Choose the unit you need.

Applications

Automotive and Tyre Pressure

32 psi = 220 kPa = 2.2 bar. Incorrect pressure affects safety, economy, and tyre life.

Engineering and Hydraulics

3,000 psi hydraulic system = 207 bar. Converting is routine for international equipment.

Medical and Atmospheric

Blood pressure: 120/80 mmHg. Atmospheric: 101.325 kPa = 1 atm.

Frequently Asked Questions