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 Engineering Formulae
  Conversion Tables - Units of Pressure
 

 

 

Units of Length Units of Area
Units of Volume Units of Weight
Units of Velocity Units of Time
Units of Work, Heat and Energy Units of Power
Units of Pressure Weight-Time Rates
Volume- Flow Rates

 

Units of Pressure: 

English System (Water, Mercury at 68°F)

To convert

Multiply by

To obtain

in. water

0.0833

ft water

in. water

0.0736

in. mercury

in. water

82.98

oz/sq ft

in. water

0.03602

psi

in. water

5.1869

psi

ft. water

12

in. water

ft water

0.8832

in. mercury

ft water

995.8

in. mercury

ft water

0.4332

psi

ft water

62.24

psf

ft (any liq.)

0.4322 x sp gr

psi

in. mercury

13.57

in. water

in. mercury

1.131

ft water

in. mercury

1128

oz/sq ft

in. mercury

0.4894

psi

in. mercury

70.47

psf

in. mercury

0.03342

atm

atm

29.92

in. mercury

oz/sq ft

0.01205

in. water

oz/sq ft

0.001004

ft water

oz/sq ft

0.000887

in. mercury

oz/sq ft

0.000434

psi

oz/sq ft

0.0625

psf

psi

27.762

in. water

psi

2.314

ft water

psi

2.314/sq gr

ft (any liq.)

psi

2.043

in. mercury

psi

230.4

oz/sq ft

psi

144

psf

psi

0.06802

atm

psf

0.1928

in.water

psf

0.01607

ft.water

psf

0.01419

in.mercury

psf

16

oz/sq ft

psf

0.00694

psi

atm

14.7

psi

 

Metric System

To convert

Multiply by

To obtain

gr/sq cm

0.01422

psi

gr/cu cm

0.0361

lb/cu in.

kg/ sq cm

14.22

psi

kg/cu m

0.0624

lb/cu ft

kg/m

0.6720

lb/ft

meters waters

1.42

psi

meters (any liq.)

1.42 x sq gr

psi

mm mercury

0.001316

atm

lb/ft

1.4881

kg/m

psi

70.31

gr/sq cm

psi

0.07031

kg/sq cm

psi

0.7042

meters water

psi

0.7042/sp gr

meters (any liq.)

lb/cu in.

27.68

gr/cu cm

lb/cu ft

16.018

kg/cm m

atm

760

mm mercury

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