壓力單位換算表

壓力單位對照表

TO CONVERT

FROM TO

psi

mbar

bar

atm

Pa

kPa

MPa

cmH2O

@20°C

in H2O

@20°C

ft H2O 

@20°C

mm Hg
( Torr )

@0°C

in Hg 

@0°C

kg/cm2

ft.sea water

psi

1

68.9476

0.0689476

0.0680460

6894.76

6.89476

6.89476
x 10-3

70.433

27.730

2.3108

51.7149

2.03602

0.0703069

2.2457

mbar

0.0145038

1

0.001

9.86923
x 10-4

100

0.1

0.0001

1.0215

0.40218

0.03352

0.75006

0.02953

0.0010197

0.032571

bar

14.5038

1000

1

0.986923

100000

100

0.1

1021.5

402.18

33.52

750.06

29.5300

1.019716

32.571

atm

14.6959

1013.25

1.01325

1

101325

101.325

0.101325

1035.08

407.511

35.959

760.0

29.9213

1.033227

33.002

Pa

1.45038
x 10-4

0.01

0.00001

9.86923
x 10-6

1

0.001

0.000001

0.010215

0.0040218

3.352
x 10-4

7.5006
x 10-3

2.95300
x 10-4

1.019716
x 10-5

3.2571
x 10-4

kPa

0.145038

10.0

0.01

0.0098692

1000

1

0.001

10.215

4.02118

0.3352

7.5006

0.295300

0.0101972

0.32571

MPa 145.038 10000 10 9.8692 1000000 1000 1 10215 4021.18 335.2 7500.6 295.300 10.1972 325.71
cm H2O

@20°C
0.14198 0.97891 9.7891
x 10-4
9.66105
x 10-4
97.891 0.097891 9.7891
x 10-5
1 0.3937 0.035281 0.73424 0.028907 9.9821
x 10-4
0.031884
in H2O 

@20°C
0.036063 2.4864 0.0024864 2.45392
x 10-3
248.64 0.24864 2.4864
x 10-4
2.5400 1 0.083333 1.8650 0.073424 0.0025354 0.080986
ft H2O

@20°C
0.432756 29.8368 0.0298368 0.294470 2983.68 2.98368 2.98368
x 10-3
30.480 12 1 22.380 0.881089 0.030425 0.97183
mm Hg 

@0°C
0.0193368 1.33322 0.0013332 0.0013158 133.322 0.133322 1.33322
x 10-4
1.3619 0.53620 0.04468 1 0.03937 0.0013595 0.043424
in Hg 

@0°C
0.491154 33.8639 0.0338639 0.0334211 3386.39 3.38639 3.38639
x 10-3
34.593 13.619 1.13491 25.400 1 0.0345316 1.1030
kg/cm2 14.2233 980.665 0.980665 0.967842 98060.5 98.0665 0.0980665 1001.8 394.41 32.868 735.559 28.959 1 31.9410
ft.sea water 0.4453 30.702 0.030702 0.030301 3070.2 3.0702 3.0702
x 10-3
31.3638 12.3482 1.02900 23.029 0.90664 0.031308 1

 

 

   



Additional remark: 1 cmH2O = 10 mmH2O

1 Torr = 1 mmHg at 0 ( 1 mmHg = 0.1 cmHg)

1 psi = 1 lb/in2

1 mmAq = 1 mmH2O = 1 mmW.C.

1 cmHg = 10 mmHg

1 kbar = 1000 bar ( 1 kbar = 100 MPa)

1 Pa = 1 N/m2, 1 kPa = 1 KN/m2 (1 MPa = 1 MN/m2)