How are mm Hg, torr, psi, atm, and Pa related to each other mathematically?
I apologize for the last link I left. I don't know what happened but I think this link will be better. You may need to scroll through it to find what you want.
http://en.wikipedia.org/wiki/Pressure#Units
The units millimeters of Mercury (mm Hg or mmHg), torr, pounds per square inch (psi), atmospheres (atm), and pascals (Pa) are all used to measure pressure. Here is how they are related to each other mathematically:
1 mm Hg = 1 torr
1 atm = 760 mm Hg = 760 torr
1 atm = 14.7 psi
1 atm = 101325 Pa
So, to convert between these units, you can use the following conversion factors:
1 mm Hg = 1 torr
1 atm = 760 mm Hg
1 atm = 760 torr
1 atm = 14.7 psi
1 atm = 101325 Pa
To convert from mm Hg or torr to psi, you can use the conversion factor:
1 atm = 14.7 psi
To convert from mm Hg or torr to pascals (Pa), you can use the conversion factor:
1 atm = 101325 Pa
To convert from pascals (Pa) to mm Hg, torr, or atm, you can use the conversion factors:
1 atm = 760 mm Hg
1 atm = 760 torr
1 atm = 101325 Pa
I hope this helps to explain the mathematical relationships between these different units of pressure measurements.