One bar is a measure of atmospheric pressure that is equal to the pressure felt at sea level on Earth. It has largely replaced the older unit of one atmosphere, which is equal to 1.013 bar. More »

One bar is equivalent to 14.50 PSI. PSI stands for pounds per square inch and is a common pressure metric in North America. More »

A watch with "20 bar" on its face has been laboratory-tested to withstand a pressure of 20 bars. That is approximately the pressure felt under 660 feet of water. More »

The unit symbol "atm" refers to units of atmospheric pressure found at sea level on the planet earth, and "kPa," or kilopascals, are smaller units of pressure, each of which is 1000 pascals. To convert from atm to kPa, y... More »

Barg pressure is the pressure, in units of bars, above or below atmospheric pressure. The "g" at the end of the word indicates that the measurement is not absolute pressure, sometimes indicated by bara. According to The ... More »

Air pressure is measured by using a barometer, the value of which is given in varying units, including inches of mercury (in Hg) or millimeters of mercury (mm Hg), torr (Tor), bar or millibars (mb), pounds per square inc... More »

At average atmospheric pressure, the expansion ratio between water in its liquid form and steam is 1:1700. This means that under ideal conditions, 1 part of liquid water expands to 1700 times the volume as steam when boi... More »