How much pressure is that in other units?

How it works

Every unit is converted through pascals, the SI unit (one newton per square metre). A hectopascal is 100 Pa (the same as a millibar), a kilopascal is 1,000 Pa, a bar is exactly 100,000 Pa and a standard atmosphere is exactly 101,325 Pa. A pound-force per square inch (psi) is about 6,894.757 Pa, so 1 bar is about 14.504 psi.

Millimetres and inches of mercury are conventional units: the pressure of a column of mercury at a fixed density and standard gravity. 1 mmHg is about 133.322 Pa and 1 inHg about 3,386.389 Pa. They are used for blood pressure and for weather and aircraft altimeter settings.

The definitions come from the BIPM SI Brochure, the 10th General Conference on Weights and Measures (standard atmosphere) and NIST Special Publication 811. The converter does not tell gauge pressure (above the air around you, as on a tyre gauge) from absolute pressure; it converts the number you give it.