Chemistry of Petrochemical Processes, 2nd Edition

Appendix One: Conversion Factors

To convert from

To

Multiply by

atmospheres

mm of mercury

760

atmospheres

pounds/sq. inch (psi)

14.696

barrels (oil)

gallons (U.S.)

42

bars

atmospheres

0.98692

?

mm of mercury (0 C)

750.062

?

pascal

1 10 5

Btu

calorie

252.15105

?

joules

1.055 10 3

calories gram (mean/gram)

Btu (mean) pound

1.8

calories

Btu

3.9658 10 -3

?

joules

4.1840

centimeters

angstrom

1 10 8

?

feet

0.0328

?

inches

0.3937

?

meters

0.01

?

microns

1 10 4

cubic feet (ft 3)

gallons (British)

6.2288

?

gallons (US)

7.48052

?

liters

28.317

cubic meters

barrels (US, liquid)

8.3865

?

cubic feet (ft 3)

35.314445

?

gallons (US)

264.173

?

liters

999.973

feet

centimeters

30.48

gallons (U.S.)

cubic feet (ft 3)

0.1336805

?

liters

3.78543

grams

ounces (avdp.) [*]

0.0352939

?

ounces (troy)

0.0321507

grams/sq. centimeter

pounds/sq. foot

2.04817

inches

centimeters

2.540005

kilograms

pounds (avdp.) [*]

2.20462234

?

pounds (troy)

2.6792285

liters

gallons (British)

0.219976

?

gallons (U.S.)

0.2641776

meters

angstroms

1 10 10

?

inches

39.37

pounds/sq. inch pressure

kilopascal (kPa)

6.8948

pounds (avdp.) [*]

grams

453.59

?

ounces (avdp.) [*]

16

pounds (avdp.) [*]

ounces (troy)

14.5833

pounds (troy)

ounces (troy)

12

pounds/sq. inch

grams/sq. centimeter

70.307

tons (metric)

kilograms

1000

?

pounds (avdp.) [*]

2204.62

tons (short)

pounds

2000

watts (abs)

Btu (mean)/hour

3.41304

Temperature Conversion:

degree Celsius ( C) = ( F - 32) 5/9

degree Fahrenheit ( F) = C 9/5 + 32

degree Kelvin ( K) = C + 273

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