ID

Unit

Definition

Wikipedia page and other notes

1

pascal (Pa, N/m2)



https://en.wikipedia.org/wiki/Pascal_(unit)
The same as newton per sq. metre

2

newton per sq. metre (N/m2, Pa)

1 Pa

https://en.wikipedia.org/wiki/Pascal_(unit)
The same as pascal

3

newton per sq. centimetre (N/cm2)

104 Pa


4

newton per sq. millimetre (N/mm2)

106 Pa


5

hectopascal (hPa)

102 Pa

https://en.wikipedia.org/wiki/Pascal_(unit)
Page refers to pascal

6

kilopascal (kPa, kN/m2)

103 Pa

https://en.wikipedia.org/wiki/Pascal_(unit)
Page refers to pascal

7

kilonewton per sq. metre (kN/m2, kPa)

103 Pa

https://en.wikipedia.org/wiki/Pascal_(unit)
Page refers to pascal

8

kilonewton per sq. centimetre (kN/cm2)

107 Pa

https://en.wikipedia.org/wiki/Pascal_(unit)
Page refers to pascal

9

kilonewton per sq. millimetre (kN/mm2)

109 Pa

https://en.wikipedia.org/wiki/Pascal_(unit)
Page refers to pascal

10

megapascal (MPa, MN/m2)

106 Pa

https://en.wikipedia.org/wiki/Pascal_(unit)
Page refers to pascal

11

meganewton per sq. metre (MN/m2, MPa)

106 Pa

https://en.wikipedia.org/wiki/Pascal_(unit)
Page refers to pascal

12

gigapascal (GPa, GN/m2)

109 Pa

https://en.wikipedia.org/wiki/Pascal_(unit)
Page refers to pascal

13

giganewton per sq. metre (GN/m2, GPa)

109 Pa

https://en.wikipedia.org/wiki/Pascal_(unit)
Page refers to pascal

14

bar

105 Pa

https://en.wikipedia.org/wiki/Bar_(unit)

15

kilobar (kbar)

108 Pa

https://en.wikipedia.org/wiki/Bar_(unit)
Page refers to bar

16

megabar (Mbar)

1011 Pa

https://en.wikipedia.org/wiki/Bar_(unit)
Page refers to bar

17

gigabar (Gbar)

1014 Pa

https://en.wikipedia.org/wiki/Bar_(unit)
Page refers to bar

18

millibar (mbar)

102 Pa

https://en.wikipedia.org/wiki/Bar_(unit)
Page refers to bar

19

microbar (μbar)

101 Pa

https://en.wikipedia.org/wiki/Bar_(unit)
Page refers to bar

20

poundforce per sq. inch (psi, lbf/in2)

(444,822,161.52605/64,516) Pa

https://en.wikipedia.org/wiki/Pounds_per_square_inch

21

poundforce per sq. foot (psf)

(1/144) psi


22

kilopoundforce per sq. inch (ksi)

103 psi

https://en.wikipedia.org/wiki/Pounds_per_square_inch#Multiples

23

kilopoundforce per sq. foot (ksf)

(103/144) psi


24

megapoundforce per sq. inch (Mpsi)

106 psi

https://en.wikipedia.org/wiki/Pounds_per_square_inch#Multiples

25

megapoundforce per sq. foot (Mpsf)

(106/144) psi


26

millimetre of mercury [conv.] (mmHg)

133.322387415 Pa

https://en.wikipedia.org/wiki/Millimeter_of_mercury
Conventionally, the density 13,595.1 kg/m3 is used for mercury for this definition, which is the approximate density of mercury at 0 °C (32 °F), and 9.80665 m/s2 is standard gravity:
13595.1*9.80665 = 133,322.387415 for 1 metre of mercury

27

centimetre of mercury [conv.] (cmHg)

1333.22387415 Pa

https://en.wikipedia.org/wiki/Millimeter_of_mercury
Page refers to “Millimeter of mercury”

28

inch of mercury [conv.] (inHg)

3386.388640341 Pa

https://en.wikipedia.org/wiki/Inch_of_mercury

29

foot of mercury [conv.] (ftHg)

40,636.663684092 Pa

https://en.wikipedia.org/wiki/Inch_of_mercury
Page refers to inch of mercury

30

millimetre of water [conv.] (mmAq)

9.80665 Pa

https://en.wikipedia.org/wiki/Millimeters,_water_gauge
Conventionally, the density 1,000 kg/m3 is used for water for this definition, which is the approximate density of water at 4 °C (39.2 °F), and 9.80665 m/s2 is standard gravity:
1000*9.80665 = 9806.65 for 1 metre of water
Note: The maximum density of water is 999.972 kg/m3 at a temperature of 3.98 °C (39.164 °F) but conventionally we use a value of 1000 kg/m3 for water for the definition of this unit

31

centimetre of water [conv.] (cmAq)

98.0665 Pa

https://en.wikipedia.org/wiki/Centimetre_of_water

32

inch of water [conv.] (inAq)

249.08891 Pa

https://en.wikipedia.org/wiki/Inch_of_water

33

foot of water [conv.] (ftAq)

2989.06692 Pa

https://en.wikipedia.org/wiki/Inch_of_water
Page refers to inch of water

34

atmosphere [standard] (atm)

101,325 Pa

https://en.wikipedia.org/wiki/Atmosphere_(unit)

35

kilogramf per sq. metre (kgf/m2)

9.80665 Pa


36

kilogramf per sq. cm (kgf/cm2, at)

98,066.5 Pa

https://en.wikipedia.org/wiki/Kilogramforce_per_square_centimetre
The same as “Technical atmosphere”

37

atmosphere [technical] (at, kgf/cm2)

98,066.5 Pa

https://en.wikipedia.org/wiki/Technical_atmosphere
The same as “kilogramf per sq. cm”

38

torr (Torr)

(1/760) atm

https://en.wikipedia.org/wiki/Torr

39

dyne per sq. metre (dyn/m2)

105 Pa


40

dyne per sq. centimetre (dyn/cm2, barye)

101 Pa

https://en.wikipedia.org/wiki/Barye
The same as “barye”

41

barye (Ba, dyn/cm2)

101 Pa

https://en.wikipedia.org/wiki/Barye
The same as “dyne per sq. centimetre”

42

pièze (pz)

103 Pa

https://en.wikipedia.org/wiki/Pi%C3%A8ze
