Pressure Converter
Convert between different pressure units including PSI, Bar, Pascal, ATM, mmHg, and more. Perfect for automotive, medical, scientific, and industrial applications.
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Common Conversions
Pressure Units Guide
Pressure is force applied perpendicular to a surface per unit area. Different industries and applications use various units to measure pressure, each with specific advantages and conventions.
Common Pressure Units
PSI (Pounds per Square Inch)
Most common in the US for tire pressure, hydraulics, and pneumatics
Bar
Metric unit, approximately equal to atmospheric pressure at sea level
Pascal (Pa)
SI base unit for pressure, commonly used with prefixes (kPa, MPa)
Atmosphere (atm)
Based on average atmospheric pressure at sea level
mmHg / Torr
Medical and scientific applications, especially blood pressure
Conversion Factors
| From | To | Multiply by |
|---|---|---|
| PSI | Bar | 0.0689476 |
| Bar | PSI | 14.5038 |
| Bar | kPa | 100 |
| ATM | PSI | 14.696 |
| mmHg | PSI | 0.0193368 |
Pressure Types
- Absolute Pressure: Measured relative to perfect vacuum
- Gauge Pressure: Measured relative to atmospheric pressure
- Differential Pressure: Difference between two pressures
- Vacuum: Pressure below atmospheric pressure
Industry Applications
Automotive
- • Tire pressure (PSI/Bar)
- • Engine oil pressure
- • Brake system pressure
- • Turbocharger boost
Medical
- • Blood pressure (mmHg)
- • Ventilator settings
- • IV fluid pressure
- • Intracranial pressure
Industrial
- • Hydraulic systems
- • Pneumatic tools
- • Process control
- • Safety systems
Scientific
- • Laboratory equipment
- • Vacuum systems
- • Gas chromatography
- • Material testing
Pro Tip
When working with pressure measurements, always verify whether you're dealing with absolute or gauge pressure. Most tire pressure gauges read gauge pressure (relative to atmospheric pressure).
Pressure Converter Answers
What does the pressure converter do?
The pressure converter converts pressure values between different units like pascals (Pa), atmospheres (atm), bars, psi, torr, and more.
Which units can I convert between?
You can convert between common pressure units such as pascals, kilopascals, atmospheres, bars, pounds per square inch (psi), millimeters of mercury (mmHg), and torr.
Is it suitable for scientific and engineering use?
Yes. The converter provides accurate conversions needed in scientific experiments, engineering calculations, and industrial applications.
How do I ensure accurate conversions?
Make sure you select the correct input and output units and enter values precisely. The tool automatically handles the unit conversion calculations.