Pressure Converter
Convert pressure between Pa, kPa, MPa, bar, psi, atm, torr, inHg, and mmHg.
Convert
Pascals
100,000 Pa
Kilopascals
100 kPa
Megapascals
0.1 MPa
Bar
1 bar
Pounds per sq inch
14.5038 psi
Atmospheres
0.986923 atm
Torr
750.0638 torr
Inches of mercury
29.53 inHg
Millimeters of mercury
750.0638 mmHg
Frequently Asked Questions about the Pressure Converter
What is the difference between bar and psi for tire pressure?
1 bar equals about 14.5038 psi. A typical car tire pressure of 2.3 bar is roughly 33.4 psi. Bar is the standard unit in Europe, while psi is used in the US.
What is standard atmospheric pressure?
Standard atmospheric pressure at sea level is 1 atm, which equals 101,325 Pa (101.325 kPa), 1.01325 bar, 14.696 psi, or 760 mmHg.
Why is blood pressure measured in mmHg?
Blood pressure has been measured in millimeters of mercury (mmHg) since the original mercury sphygmomanometer was invented in the 1880s. A normal reading of 120/80 mmHg equals roughly 16/10.7 kPa.
What is the difference between torr and mmHg?
Torr and mmHg are nearly identical (both equal 1/760 of a standard atmosphere, roughly 133.322 Pa). The values are interchangeable in most practical applications.
What is inHg and where is it used?
Inches of mercury (inHg) is mainly used in US aviation for altimeter settings and in weather reports. 1 inHg equals about 3,386.39 Pa or 33.8639 mbar.