# atm to mmHg

The standard barometric pressure indicates atmospheric pressure and is defined as 101325Pa = one barometric pressure and the standard barometric rule.
Then, in order to use the unit of pressure"atm", it is the conversion formula that １atm (atom) = 101325Pa (Pascal) is satisfied.Because this is a definition, it can be said that there is no choice but to remember. And, the mmhg is a unit of pressure when Mercury column is used, and how to read it is various, such as "Milie chair", "millimeter Mercury note meter", "millihagen".
At this time, it is defined as 1atm = 760mmhg.This is because of the definition (that is fixed) I have no choice but to remember.
In addition, in order to convert from mmhg to atm, since it is good to take the inverse, it is possible to calculate 1mmhg = 1/760atm.
In this way, let's understand that mmhg and atm can be converted.It should be noted that, since the numerical value in front of each unit of magnitude relationship will be as follows, it is good to be able to image which one will be larger as a numerical value.

### Convert atmosphere to Torr and back

 The pressure of the atmosphere = Pressure, mmHg St =
 Pressure, mmHg St = The pressure of the atmosphere =