🎈 Pressure converter
Convert between psi, bar, kilopascals, atmospheres and millimeters of mercury. Enter a value and pick its unit to see it in every other unit.
Popular pressure conversions
| Conversion | Rate |
|---|---|
| Bar to pounds per square inch | 1 bar = 14.503774 psi |
| Pounds Per Square Inch to bar | 1 psi = 0.068947573 bar |
| Kilopascals to pounds per square inch | 1 kPa = 0.14503774 psi |
| Pounds Per Square Inch to kilopascals | 1 psi = 6.8947573 kPa |
| Megapascals to pounds per square inch | 1 MPa = 145.03774 psi |
| Atmospheres to pounds per square inch | 1 atm = 14.695949 psi |
| Inches Of Mercury to millibars | 1 inHg = 33.863886 mbar |
| Millimeters Of Mercury to kilopascals | 1 mmHg = 0.13332239 kPa |
Quick answers
- 50 bar to psi
- 100 bar to psi
- 150 bar to psi
- 200 bar to psi
- 250 bar to psi
- 300 bar to psi
- 50 psi to bar
- 100 psi to bar
- 200 psi to bar
- 300 psi to bar
- 400 psi to bar
- 500 psi to bar
About pressure units
Tire pressure is given in psi in the US and in bar or kPa elsewhere. One bar is about 14.5 psi, and 1 psi is about 6.9 kPa.
Weather uses hectopascals (the same as millibars) or inches of mercury, and blood pressure uses millimeters of mercury.
Pressure units
| Unit | Symbol | In pascals |
|---|---|---|
| Pascal | Pa | 1 Pa |
| Hectopascal | hPa | 100 Pa |
| Kilopascal | kPa | 1,000 Pa |
| Megapascal | MPa | 1,000,000 Pa |
| Bar | bar | 100,000 Pa |
| Millibar | mbar | 100 Pa |
| Pound Per Square Inch | psi | 6,894.757293 Pa |
| Atmosphere | atm | 101,325 Pa |
| Millimeter Of Mercury | mmHg | 133.3223874 Pa |
| Inch Of Mercury | inHg | 3,386.38864 Pa |
| Torr | Torr | 133.3223684 Pa |
All pressure conversions
From pascals
From hectopascals
From kilopascals
From megapascals
From bar
From millibars
From pounds per square inch
- Pounds Per Square Inch to pascals
- Pounds Per Square Inch to hectopascals
- Pounds Per Square Inch to kilopascals
- Pounds Per Square Inch to megapascals
- Pounds Per Square Inch to bar
- Pounds Per Square Inch to millibars
- Pounds Per Square Inch to atmospheres
- Pounds Per Square Inch to millimeters of mercury
- Pounds Per Square Inch to inches of mercury
- Pounds Per Square Inch to torr
From atmospheres
From millimeters of mercury
- Millimeters Of Mercury to pascals
- Millimeters Of Mercury to hectopascals
- Millimeters Of Mercury to kilopascals
- Millimeters Of Mercury to megapascals
- Millimeters Of Mercury to bar
- Millimeters Of Mercury to millibars
- Millimeters Of Mercury to pounds per square inch
- Millimeters Of Mercury to atmospheres
- Millimeters Of Mercury to inches of mercury
- Millimeters Of Mercury to torr
From inches of mercury
- Inches Of Mercury to pascals
- Inches Of Mercury to hectopascals
- Inches Of Mercury to kilopascals
- Inches Of Mercury to megapascals
- Inches Of Mercury to bar
- Inches Of Mercury to millibars
- Inches Of Mercury to pounds per square inch
- Inches Of Mercury to atmospheres
- Inches Of Mercury to millimeters of mercury
- Inches Of Mercury to torr
From torr
Pressure unit definitions
- Pascal (Pa)
- The pascal is the SI unit of pressure, one newton per square meter.
- Hectopascal (hPa)
- A hectopascal is 100 pascals, exactly one millibar. Weather maps give air pressure in hPa.
- Kilopascal (kPa)
- A kilopascal is 1,000 pascals. Tire pressure outside the US is often given in kPa.
- Megapascal (MPa)
- A megapascal is 1,000,000 pascals. Material strength and hydraulic pressure are given in MPa.
- Bar (bar)
- A bar is 100,000 pascals, close to air pressure at sea level. Tires, scuba tanks and espresso machines use bar.
- Millibar (mbar)
- A millibar is one thousandth of a bar, the same as a hectopascal. Weather reports use it.
- Pound Per Square Inch (psi)
- Pounds per square inch is the US unit for tire pressure, air compressors and hydraulics. One psi is about 6,895 pascals.
- Atmosphere (atm)
- A standard atmosphere is exactly 101,325 pascals, average air pressure at sea level.
- Millimeter Of Mercury (mmHg)
- A millimeter of mercury is about 133.3 pascals. Blood pressure is measured in mmHg.
- Inch Of Mercury (inHg)
- An inch of mercury is about 3,386 pascals. US weather reports and aviation altimeters use inHg.
- Torr (Torr)
- A torr is 1/760 of a standard atmosphere, very close to one millimeter of mercury. Vacuum systems are rated in torr.