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Pressure and Stress Units Conversion
Pressure (symbol: p) is the force per unit area acting on a surface in a direction perpendicular to that surface.
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The pound-force per square inch (symbol: lbf/in/2) is a non-SI unit of pressure based on avoirdupois units. In casual English language use it is rendered as "pounds per square inch", abbreviated to psi with little distinction between "mass" and "force"
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The bar (symbol bar) and the millibar (symbol mbar, also mb) are units of pressure. They are not SI units, but accepted (although discouraged) for use with the SI. The bar is still widely used in descriptions of pressure because it is about the same as atmospheric pressure.
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Convert from British and U.S. pound per square inch
bar (bar)
hectopascal (hPa)
kilogram per square centimeter (kgf/cm²)
kilogram per square meter (kgf/m²)
kilogram per square millimeter (kgf/mm²)
kilonewton per square meter (kN/m²)
kilopascal (kPa)
meganewton per square meter (MN/m²)
megapascal (MPa)
millibar (mbar)
newton per square meter (N/m²)
newton per square millimeter (N/mm²)
pascal (Pa)
newton per square centimeter (N/cm²)
thousand pounds per square inch (ksi)
ton per square foot (long)
ton per square foot (short)
ton per square inch (long)
ton per square inch (short)
pound per square foot (psf)
pound per square inch (psi)
centimeter of water (cmH2O)
inch of water (inH2O)
millimeter of water (mmH2O)
micrometer of water
foot of water
meter of water (mH2O)
technical atmosphere (at)
physical atmosphere (atm)
centimeter of mercury (cmHg)
inch of mercury (inHg)
micron of mercury
foot of mercury
micrometer of mercury
millimeter of mercury (mmHg)
torr (torr)
meter of air (0 °C)
meter of air
inch of air (0 °C)
inch of air (15 °C)
foot of air (0 °C)
foot of air (15 °C)
barad (Ba)
barye (Ba)
centibar
centihg
foot of head
attobar
attopascal
centipascal
centitorr
decibar (dbar)
decipascal
decitorr
dekabar
dekapascal
dyne per square centimeter
exabar
exapascal
femtobar
femtopascal
kilobar
gigabar
gigapascal
gram per square centimeter
hectobar
kilopond per square centimeter
kilopond per square meter
kilopond per square millimeter
kip per square foot
kip per square inch
megabar
meter of head
microbar
micropascal
millipascal
millitorr
nanobar
nanopascal
ounce per square inch
millihg
yoctobar
yoctopascal
yottabar
yottapascal
zeptobar
zeptopascal
zettabar
zettapascal
poundal per square foot
sthene per square meter
petabar
petapascal
picobar
picopascal
pieze (pz)
terabar
terapascal
ton per square meter
Value
...calculating...
Format result
0 decimals
1 decimals
2 decimals
3 decimals
4 decimals
5 decimals
6 decimals
7 decimals
1 pound per square inch is equal to:
Metric
bar
0.0689
hectopascal
68.9476
kilogram per square centimeter
0.0703
kilogram per square meter
703.0696
kilogram per square millimeter
0.0007
kilonewton per square meter
6.8948
kilopascal
6.8948
meganewton per square meter
0.0069
megapascal
0.0069
millibar
68.9476
newton per square meter
6894.7573
newton per square millimeter
0.0069
pascal
6894.7573
newton per square centimeter
0.6895
British and U.S.
thousand pounds per square inch
0.001
ton per square foot (long)
0.0643
ton per square foot (short)
0.072
ton per square inch (long)
0.0004
ton per square inch (short)
0.0005
pound per square foot
144
pound per square inch
1
Water (at 39.2°F, 4°C)
centimeter of water
70.307
inch of water
27.6799
millimeter of water
703.0696
micrometer of water
703069.5783
foot of water
2.3067
meter of water
0.7031
Atmosphere
technical atmosphere
0.0703
physical atmosphere
0.068
Mercury
centimeter of mercury
5.1715
inch of mercury
2.036
micron of mercury
51714.9241
foot of mercury
0.1697
micrometer of mercury
51714.9241
millimeter of mercury
51.7149
torr
51.7149
Air
meter of air (0 °C)
543.8596
meter of air
573.8268
inch of air (0 °C)
21411.7976
inch of air (15 °C)
22591.6073
foot of air (0 °C)
1784.3165
foot of air (15 °C)
1882.6339
French
barad
68947.5728
barye
68947.5728
Other
centibar
6.8948
centihg
5.1715
foot of head
2.3067
attobar
6.8948 x 10
16
attopascal
6.8948 x 10
21
centipascal
689475.728
centitorr
5171.4932
decibar
0.6895
decipascal
68947.5728
decitorr
517.1493
dekabar
0.0069
dekapascal
689.4757
dyne per square centimeter
68947.5728
exabar
6.8948 x 10
-20
exapascal
6.8948 x 10
-15
femtobar
68947572800000
femtopascal
6.8948 x 10
18
kilobar
6.8948 x 10
-05
gigabar
6.8948 x 10
-11
gigapascal
6.8948 x 10
-06
gram per square centimeter
70.307
hectobar
0.0007
kilopond per square centimeter
0.0703
kilopond per square meter
703.0696
kilopond per square millimeter
0.0007
kip per square foot
0.144
kip per square inch
0.001
megabar
6.8948 x 10
-08
meter of head
0.7032
microbar
68947.5728
micropascal
6894757280
millipascal
6894757.28
millitorr
51714.9319
nanobar
68947572.8
nanopascal
6894757280000
ounce per square inch
16
millihg
51.7149
yoctobar
6.8948 x 10
22
yoctopascal
6.8948 x 10
27
yottabar
6.8948 x 10
-26
yottapascal
6.8948 x 10
-21
zeptobar
6.8948 x 10
19
zeptopascal
6.8948 x 10
24
zettabar
6.8948 x 10
-23
zettapascal
6.8948 x 10
-18
poundal per square foot
4633.0631
sthene per square meter
6.8948
petabar
6.8948 x 10
-17
petapascal
6.8948 x 10
-12
picobar
68947572800
picopascal
6.8948 x 10
15
pieze
6.8948
terabar
6.8948 x 10
-14
terapascal
6.8948 x 10
-09
ton per square meter
0.7031
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