Pressure Converter

Convert pressure between Bar, PSI, Pascal, Atmosphere, Torr, mmHg, and 12 other units. Instant, accurate conversions for engineering, science, and everyday use.

Pressure Converter

Convert pressure between different units including Bar, PSI, Pascal, Atmosphere, and more

Pressure Value

Source Unit

Common Pressure References

• Standard atmosphere: 101,325 Pa = 1 atm

• Car tire pressure: ~32 psi = 2.2 bar

• Blood pressure (systolic): ~120 mmHg

• Deep sea (1000m): ~100 atm

Unit Relationships

1 bar = 100,000 Pa

1 atm = 101,325 Pa

1 psi ≈ 6,894.76 Pa

1 torr ≈ 133.32 Pa

Formula

Conversion via Pascal (SI base unit)

All pressure values are converted through Pascal (Pa) as the base unit. Enter a value and select the source unit to see conversions to all other units.

How to Use

1
Enter pressure value — Type the pressure value you want to convert in the input field.
2
Select source unit — Choose the unit of your input value from the dropdown (e.g., Bar, PSI, Pascal).
3
View all conversions — Instantly see the equivalent pressure in all supported units.
4
Copy results — Click on any result to copy it to your clipboard for use elsewhere.

Frequently Asked Questions

What is the difference between Bar and PSI?

Bar and PSI are both units of pressure. Bar is a metric unit where 1 bar equals 100,000 Pascals. PSI (pounds per square inch) is an imperial unit commonly used in the US. 1 bar ≈ 14.5 PSI.

What is standard atmospheric pressure?

Standard atmospheric pressure at sea level is defined as 101,325 Pascals, which equals 1 atmosphere (atm), approximately 1.013 bar, or about 14.7 PSI.

What is Pascal (Pa)?

Pascal is the SI (International System) unit of pressure. It is defined as one Newton per square meter (N/m²). Named after Blaise Pascal, it is the base unit used for scientific pressure measurements.

When should I use mmHg or Torr?

mmHg (millimeters of mercury) and Torr are nearly identical units commonly used in medicine (blood pressure) and vacuum technology. 1 Torr = 1 mmHg = 133.322 Pa.

What is gauge pressure vs absolute pressure?

Absolute pressure is measured relative to a perfect vacuum (zero pressure). Gauge pressure is measured relative to atmospheric pressure. This converter uses absolute pressure values.

How do I convert tire pressure from Bar to PSI?

Multiply the Bar value by 14.5038 to get PSI. For example, 2.2 bar × 14.5 ≈ 32 PSI, which is a typical car tire pressure.

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