Altitude Above Sea Level

Atmospheric Pressure

feet

meter

In. Hg.  Abs.

mm Hg. Abs.

PSIA

Kg / cm²

kPa A

-5000

-1526

35.58

903.7

17.48

1.229

120.5

-4500

-1373

35.00

889.0

17.19

1.209

118.5

-4000

-1220

34.42

874.3

16.9

1.188

116.5

-3500

-1068

33.84

859.5

16.62

1.169

114.6

-3000

-915

33.27

845.1

16.34

1.149

112.7

-2500

-763

32.70

830.6

16.06

1.129

110.7

-2000

-610

32.14

816.4

15.78

1.109

108.8

-1500

-458

31.58

802.1

15.51

1.091

106.9

-1000

-305

31.02

787.9

15.23

1.071

105.0

-500

-153

30.47

773.9

14.96

1.052

103.1

0

0

29.92

760.0

14.696

1.0333

101.33

500

153

29.38

746.3

14.43

1.015

99.49

1000

305

28.86

733.0

14.16

0.956

97.63

1500

458

28.33

719.6

13.91

0.978

95.91

2000

610

27.82

706.6

13.66

0.960

94.19

2500

763

27.32

693.9

13.41

0.943

92.46

3000

915

26.82

681.2

13.17

0.926

90.81

3500

1068

26.33

668.8

12.93

0.909

89.15

4000

1220

25.84

656.3

12.69

0.892

87.49

4500

1373

25.37

644.4

12.46

0.876

85.91

5000

1526

24.90

632.5

12.23

0.86

84.33

6000

1831

23.99

609.3

11.78

0.828

81.22

7000

2136

23.10

586.7

11.34

0.797

78.19

8000

2441

22.23

564.6

10.91

0.767

75.22

9000

2746

21.39

543.3

10.5

0.738

72.40

10,000

3050

20.58

522.7

10.1

0.71

69.64

15,000

4577

16.89

429.0

8.29

0.583

57.16

20,000

6102

13.76

349.5

6.76

0.475

46.61

25,000

7628

11.12

282.4

5.46

0.384

37.65

30,000

9153

8.903

226.1

4.37

0.307

30.13

35,000

10,679

7.06

179.3

3.47

0.244

23.93

40,000

12,204

5.558

141.2

2.73

0.192

18.82

45,000

13,730

4.375

111.1

2.15

0.151

14.82

50,000

15,255

3.444

87.5

1.69

0.119

11.65

55,000

16,781

2.712

68.9

1.33

0.0935

9.17

60,000

18,306

2.135

54.2

1.05

0.0738

7.24

70,000

21,357

1.325

33.7

0.651

0.651

4.49

80,000

24,408

0.8273

21.0

0.406

0.406

2.80

90,000

27,459

0.520

13.2

0.255

0.255

1.76

100,000

30,510

0.329

8.36

0.162

0.162

1.12