Pressure Converter
Convert pressure between pascals, bar, psi, atm and mmHg.
Results update as you type.
About this calculator
A pressure converter changes a pressure reading between pascals and kilopascals, bar, the standard atmosphere, psi, and the mmHg / torr / inHg units used in weather, medicine and vacuum work. Values convert through the pascal.
Frequently asked questions
How many psi are in a bar?
One bar equals about 14.5038 psi. A bar is close to one atmosphere, so car tyre pressures in bar and psi are roughly a 1-to-14.5 ratio.
What is one atmosphere?
One standard atmosphere (atm) is 101,325 pascals, about 1.013 bar or 14.696 psi. It is the average air pressure at sea level.
What is mmHg used for?
Millimeters of mercury measure blood pressure and barometric pressure. One mmHg is about 133.322 pascals, and 760 mmHg equals one atmosphere.
Results are estimates for general guidance only, not financial, medical or tax advice.