This article provides the table of conversion from one unit system to another for the various pressure measurement units.

1. Pascal Bar
Technical
Atmosphere
Standard
Atmosphere
Torr
Pound per
square Inch
(PSI)
(Pa)
(bar)
(𝑑𝑦𝑛 𝑐𝑚2
)
(at)
(𝑘𝑔𝑓 𝑐𝑚2
)
(atm)
(Torr)
(𝑚𝑚 𝐻𝑔)
(𝑙𝑏𝑓 𝑖𝑛𝑐ℎ 2)
1 Pa 1 10−5 1.0197 ∗ 10−5 9.86 ∗ 10−6
7.5 ∗ 10−3
1.45 ∗ 10−4
1 Bar 105 1 1.0197 0.98692 750.06 14.503
1 at 98066.5 0.980665 1 0.967 735.559 14.223
1 atm 101325 1.01325 1.0332 1 760 14.695
1 Torr 133.32 1.333 ∗ 10−3 1.36 ∗ 10−3 0.0013 ∗ 10−3 1 1.933 ∗ 10−2
1 PSI 6894.76 6.894 ∗ 10−2 0.070306 0.068045 51.714 1