Vacuum Pressures Unit Conversions Chart (Absolute)

Vacuum Pressures Unit Conversions Chart (Absolute)

ver 08-Aug-2017

% Vacuum

0.00

1.40

1.90

3.30

6.60

7.90

9.80

10.00

20.00

25.00

30.00

33.00

35.00

40.00

45.00

50.00

55.00

60.00

61.00

65.00

68.00

70.00

75.00

80.00

85.00

87.00

88.00

89.00

90.00

92.00

93.00

95.00

96.60

97.40

98.70

100.00

ATM

(standard

atmosphere)

1.00

0.99

0.98

0.97

0.93

0.92

0.90

0.90

0.80

0.75

0.70

0.67

0.65

0.60

0.55

0.50

0.45

0.40

0.39

0.35

0.32

0.30

0.25

0.20

0.15

0.13

0.12

0.11

0.10

0.08

0.07

0.05

0.03

0.03

0.01

0.00

PSIA

Torr

(mm Hg)

14.70

14.49

14.42

14.21

13.73

13.53

13.26

13.23

11.76

11.02

10.29

9.85

9.55

8.82

8.08

7.35

6.61

5.88

5.73

5.14

4.70

4.41

3.67

2.94

2.20

1.91

1.76

1.62

1.47

1.18

1.03

0.73

0.50

0.38

0.19

0.00

760.00

749.36

745.56

734.92

709.84

699.96

685.52

684.00

608.00

570.00

532.00

509.20

494.00

456.00

418.00

380.00

342.00

304.00

296.40

266.00

243.20

228.00

190.00

152.00

114.00

98.80

91.20

83.60

76.00

60.80

53.20

38.00

25.84

19.76

9.88

0.00

in HG

(inches

Mercury)

29.92

29.50

29.35

28.93

27.95

27.56

26.99

26.93

23.94

22.44

20.94

20.05

19.45

17.95

16.46

14.96

13.46

11.97

11.67

10.47

9.57

8.98

7.48

5.98

4.49

3.89

3.59

3.29

2.99

2.39

2.09

1.50

1.02

0.78

0.39

0.00

kPa

(SI unit)

bar

mbar

101.33

99.91

99.40

97.98

94.64

93.32

91.40

91.19

81.06

75.99

70.93

67.89

65.86

60.80

55.73

50.66

45.60

40.53

39.52

35.46

32.42

30.40

25.33

20.27

15.20

13.17

12.16

11.15

10.13

8.11

7.09

5.07

3.45

2.63

1.32

0.00

1.01

1.00

0.99

0.98

0.95

0.93

0.91

0.91

0.81

0.76

0.71

0.68

0.66

0.61

0.56

0.51

0.46

0.41

0.40

0.35

0.32

0.30

0.25

0.20

0.15

0.13

0.12

0.11

0.10

0.08

0.07

0.05

0.03

0.03

0.01

0.00

1013.25

999.06

994.00

979.81

946.38

933.20

913.95

911.93

810.60

759.94

709.28

678.88

658.61

607.95

557.29

506.63

455.96

405.30

395.17

354.64

324.24

303.98

253.31

202.65

151.99

131.72

121.59

111.46

101.33

81.06

70.93

50.66

34.45

26.34

13.17

0.00

Perfect vacuum or 100% vacuum is a zero reference pressure. In practice, a perfect vacuum is impossible to obtain.

kPa = bar x 100; mbar = bar x 1000

Vacuum Pressures Unit Conversions Chart (Relative)

ver 08-Aug-2017

% Vacuum

0.00

1.40

1.90

3.30

6.60

7.90

9.80

10.00

20.00

25.00

30.00

33.00

35.00

40.00

45.00

50.00

55.00

60.00

61.00

65.00

68.00

70.00

75.00

80.00

85.00

87.00

88.00

89.00

90.00

92.00

93.00

95.00

96.60

97.40

98.70

100.00

ATM

(standard

atmosphere)

1.00

0.99

0.98

0.97

0.93

0.92

0.90

0.90

0.80

0.75

0.70

0.67

0.65

0.60

0.55

0.50

0.45

0.40

0.39

0.35

0.32

0.30

0.25

0.20

0.15

0.13

0.12

0.11

0.10

0.08

0.07

0.05

0.03

0.03

0.01

0.00

PSIG

negative

gauge

0.00

- 0.21

- 0.28

- 0.48

- 0.97

- 1.16

- 1.44

- 1.47

- 2.94

- 3.67

- 4.41

- 4.85

- 5.14

- 5.88

- 6.61

- 7.35

- 8.08

- 8.82

- 8.96

- 9.55

- 9.99

- 10.29

- 11.02

- 11.76

- 12.49

- 12.79

- 12.93

- 13.08

- 13.23

- 13.52

- 13.67

- 13.96

- 14.20

- 14.31

- 14.50

- 14.70

Torr (mm Hg)

negative

gauge

0.00

- 10.64

- 14.44

- 25.08

- 50.16

- 60.04

- 74.48

- 76.00

-152.00

-190.00

-228.00

-250.80

-266.00

-304.00

-342.00

-380.00

-418.00

-456.00

-463.60

-494.00

-516.80

-532.00

-570.00

-608.00

-646.00

-661.20

-668.80

-676.40

-684.00

-699.20

-706.80

-722.00

-734.16

-740.24

-750.12

-760.00

inches Hg

negative

gauge

0.00

- 0.42

- 0.57

- 0.99

- 1.97

- 2.36

- 2.93

- 2.99

- 5.98

- 7.48

- 8.98

- 9.87

- 10.47

- 11.97

- 13.46

- 14.96

- 16.46

- 17.95

- 18.25

- 19.45

- 20.35

- 20.94

- 22.44

- 23.94

- 25.43

- 26.03

- 26.33

- 26.63

- 26.93

- 27.53

- 27.83

- 28.43

- 28.90

- 29.14

- 29.53

- 29.92

kPa

negative

gauge

0.00

- 1.42

- 1.93

- 3.34

- 6.69

- 8.00

- 9.93

- 10.13

- 20.27

- 25.33

- 30.40

- 33.44

- 35.46

- 40.53

- 45.60

- 50.66

- 55.73

- 60.80

- 61.81

- 65.86

- 68.90

- 70.93

- 75.99

- 81.06

- 86.13

- 88.15

- 89.17

- 90.18

- 91.19

- 93.22

- 94.23

- 96.26

- 97.88

- 98.69

-100.01

-101.33

bar

negative

gauge

0.00

-0.01

-0.02

-0.03

-0.07

-0.08

-0.10

-0.10

-0.20

-0.25

-0.30

-0.33

-0.35

-0.41

-0.46

-0.51

-0.56

-0.61

-0.62

-0.66

-0.69

-0.71

-0.76

-0.81

-0.86

-0.88

-0.89

-0.90

-0.91

-0.93

-0.94

-0.96

-0.98

-0.99

-1.00

-1.01

Perfect vacuum or 100% vacuum is a zero reference pressure. In practice, a perfect vacuum is impossible to obtain.

kPa = bar x 100; mbar = bar x 1000

mbar

negative

gauge

0.00

- 14.19

- 19.25

- 33.44

- 66.87

- 80.05

- 99.30

- 101.33

- 202.65

- 253.31

- 303.98

- 334.37

- 354.64

- 405.30

- 455.96

- 506.63

- 557.29

- 607.95

- 618.08

- 658.61

- 689.01

- 709.28

- 759.94

- 810.60

- 861.26

- 881.53

- 891.66

- 901.79

- 911.93

- 932.19

- 942.32

- 962.59

- 978.80

- 986.91

-1000.08

-1013.25

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