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Pressure Converter

Convert pressure for tires, weather, diving, blood pressure and engineering.

1 bar = 14.50377377 pounds per square inch

Formula: psi = bar × 14.50377377

The same amount in other units

UnitValue
Pascal (Pa)100,000
Hectopascal (hPa)1,000
Kilopascal (kPa)100
Megapascal (MPa)0.1
Millibar (mbar)1,000
Bar1
Standard atmosphere (atm)0.9869232667
Pound per square inch (psi)14.50377377
Millimeter of mercury (mmHg)750.0615758
Inch of mercury (inHg)29.5299833
Torr750.0616827

Popular conversions

Which pressure unit is used where

The SI unit of pressure is the pascal, one newton per square meter. It's small, so everyday pressures are usually given in kilopascals, bars or hectopascals. One bar is exactly 100,000 pascals, close to the air pressure at sea level.

Different fields use different units. Tire pressure is given in psi in the United States and in bar or kPa elsewhere. Weather maps use hectopascals, which are the same as millibars. Blood pressure is measured in millimeters of mercury (mmHg).

Units in this converter

Pascal (Pa)
The SI unit of pressure, one newton per square meter.
Hectopascal (hPa)
100 pascals, the same as a millibar. Used for air pressure on weather maps.
Kilopascal (kPa)
1,000 pascals. Used for tire pressure in many countries.
Megapascal (MPa)
1,000,000 pascals. Used for the strength of materials and for hydraulics.
Millibar (mbar)
One thousandth of a bar, the same as a hectopascal. Used in weather reports.
Bar
Exactly 100,000 pascals, close to the air pressure at sea level. Used for tire pressure, diving and espresso machines.
Standard atmosphere (atm)
Exactly 101,325 pascals, the average air pressure at sea level.
Pound per square inch (psi)
About 6,895 pascals. Used for tire and air-compressor pressure in the United States.
Millimeter of mercury (mmHg)
About 133.3 pascals. Used for blood pressure readings.
Inch of mercury (inHg)
25.4 mmHg, about 3,386 pascals. Used for air pressure in US weather reports and aviation.
Torr
Exactly 1/760 of a standard atmosphere, almost the same as 1 mmHg. Used for vacuum measurements.

Frequently asked questions

How many psi are in 1 bar?

About 14.504 psi. To convert bar to psi, multiply by 14.504. To convert psi to bar, divide by 14.504.

What is 32 psi in bar?

About 2.21 bar, a common tire pressure for cars.

What is normal air pressure at sea level?

On average 1,013.25 hectopascals, which is exactly one standard atmosphere (101,325 pascals) or about 29.92 inches of mercury.

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