Chromalox Big Red Book

Technical

Reference Data Engineering Constants & Conversions

Common Conversion Factors

Common Conversion Factors

Multiply By

Multiply By 1.0133 29.92 0.9869 14.504

To Convert

Units

To Obtain

Units

To Convert

Units

To Obtain

Units

Joules Joules Joules

J J J

0.000948 0.2388 0.0002778 1

British thermal unit

Btu cal Wh W

Atmospheres Atmospheres

atm atm

Bar Inches Mercury Atmospheres atm Pounds/square inch psi in. Hg

Calories Watt/hrs Watts

Bar Bar

Joules/second Kilocalories/hour

J/s

kcal/h

3.969 British ther. units/hr Btuh

British thermal unit British thermal unit British thermal unit British thermal unit Brit. ther. units/hr Brit. ther. units/hr Brit. ther. units/hr Brit. ther. units

Btu Btu Btu Btu

1,055

Joules Kilowatts Watts Kilocalories Joules/second Watt/hours Kilowatt/hours

J

Kilograms Kilo./cubic meter Kilo./cubic meter kg/m 3 Kilograms/sq cm kg/cm 2 kg kg/m 3

2.205 0.001 0.06243

Pounds lb Grams/cu centimeter g/cm 3 Pounds/cubic foot lb/ft 3 Pounds/square inch psi

0.0002931 0.2931 0.252 0.2931 0.2931 0.0002931 0.1442 0.03281 0.3937 1.969 0.061 0.02832 7.481 1.699 0.000472 0.4719

kW W kcal J/s Wh

14.22

Btuh Btuh Btuh

Kilojoule

kJ

0.2778 Watt/hrs 0.6315 Miles/hr

Wh mph

kWh Watts/meter/°C W/m/°C

Kilometers/hour Kilopascal Kilowatt/hours

km/h kPa kWh kW

Btu/in/h inch/hour/sqft/°F ft 2 /°F

0.145 Pounds/square inch psi

3,412 3,412

British ther. units/hr Btuh British thermal units Btu

Calories Centimeter Centimeter

cal cm

4.187 Joules

J ft

Kilowatt

Feet Inches

Liter Liter Liter

l l l

0.03532 0.001 0.2642 2.119

Cubic feet Cubic meters Gallon, U.S. Cubic feet/min. Gallons/min.

ft 3 m 3 gal cfm gpm

cm Centimeters/second cm/s

in. fpm

Feet/minute Cubic inches Pounds of water lb Cubic centimeters cm 3 Cubic meters m 3 Gallons, U.S. gal Liters l Cubic meters/hour m 3 /h Cubic meters/sec m 3 /s Liters/second l/s Cubic centimeters cm 3 Cubic feet ft 3 Gallons, U.S. gal Liters l Cubic feet/min. cfm Gallons/min. gpm Cubic feet/min. cfm in 3

Cubic centimeter Cubic feet Cubic feet Cubic feet Cubic feet Cubic feet Cubic feet/minute

cm 3

Liters/second Liters/second

l/s l/s m m

ft 3 ft 3 ft 3 ft 3 ft 3

62.43 28.32

15.85

Meter Meter

3.281

Feet Inches

ft

39.37

in.

Meters/second Miles/hour

m/s mph ml mm N/m 2

196.9

Feet/min.

fpm km/h

28.32

1.609 Kilometers/hr

cfm Cubic feet/minute term Cubic feet/minute cfm Cubic inch in 3 Cubic meter m 3 Cubic meter m 3 Cubic meter m 3 Cubic meters/hr m 3 /h Cubic meters/hr m 3 /h Cubic meters/sec m 3 /s

Milliliter Millimeter

1 0.03937

Cubic centimeters cm 3 Inches in.

Newtons/sq meter

0.000145 Pounds/square inch psi

16.39 35.32

Ounce Pound Pound

oz lb lb

28.35

Grams Grams

g g

264.2

453.6

1,000

0.4536 0.01602

Kilograms kg Grams/cu centimeter g/cm 3 Kilograms/cu meter kg/m 3 Grams/cu centimeter g/cm 3 Atmospheres atm Bar Kilograms/sq cm kg/cm 2 Kilopascals kPa Newtons/sq meter N/m 2 Torr Square centimeters cm 2 Square meters m 2 Square centimeters cm 2 Square feet ft 2 J British ther. units/hr Btuh Kilojoules kJ Kilowatt-hours kWh Joules/second J/s British thermal units Btu Kilowatts kW British ther. units inch/hour/ sqft/°F Btu/in./hr/ft 2 /°F Watts/square inch W/in 2 Watts/sq centimeter W/cm 2 Atmospheres Inches Mercury atm in. Hg Joules Square feet Square inches ft 2 in 2

0.5885 4.403

Pounds/cubic foot Pounds/cubic foot lb/ft 3 Pounds/cubic inch lb/in 3 Pounds/square inch psi Pounds/square inch psi Pounds/square inch psi Pounds/square inch psi Pounds/square inch psi Pounds/square inch psi Square centimeters cm 2 Square centimeters cm 2 lb/ft 3

16.02 27.68

2,119

Feet Feet

ft ft

30.48

Centimeters

cm m

0.06805 0.06895 0.07031 6.895 6.895 0.001076 0.155

0.3048 0.508 0.00508 1.201 0.1337 8.337 0.8327 3.785 0.003785 0.2271 0.06309 0.035274 0.002205

Meters

Feet/minute Feet/minute Gallon, Imperial Gallon, U.S. Gallon, U.S. Gallon, U.S. Gallon, U.S. Gallon, U.S. Gallon, U.S. Gallons/minute Gallons/minute

fpm fpm

Centimeters/sec. Meters/sec. Gallons, U.S. Cubic inches Cubic feet Pounds of water Gallon Imperial Liters Cubic meters Cubic meters/hr Liters/sec.

cm/s m/s

gal in 3 ft 3

51.71

gal gal gal gal gal gal

231

lb

Square feet Square feet Square inches Square meters

ft 2 ft 2 in 2 m 2

929

l

0.0929 6.452

m 3 l/s oz m 3 /h

gpm gpm

10.76

Torr Torr

0.001316

Grams Grams

g

Ounces Pounds

25.4

g Grams/cu centimeter g/cm 3 Grams/cu centimeter g/cm 3 Grams/cu centimeter g/cm 3

lb Kilograms/cu meter kg/m 3 Pounds/cubic foot lb/ft 3 Pounds/cubic inch lb/in 3 kW British thermal units Btu Foot-lbs/min ft-lb/min Kilowatts kW British ther. units/hr Btuh Kilowatts

Watt-hours Watt-hours Watt-hours Watt-hours

Wh Wh Wh Wh W W

3,600

1,000

3.412 3.6 0.001 1 3.412 0.001 6.934 6.452 0.155

62.43

0.03613 0.7457

Horsepower Horsepower Horsepower

hp hp hp

Watts Watts Watts

2,545 33,000

W Watts/meter/°C W/m/°C Watts/sq centimeter W/cm 2 Watts/square inch W/in 2

Horsepower, boiler Horsepower, boiler

bhp bhp

9.803

3,352

Inches Inches

in. in.

2.54

Centimeters Millimeters Atmospheres

cm mm atm

25.4

Inches Mercury Inches Mercury

in. Hg in. Hg

0.03342 0.03937

Yards

yd

0.944 Meters

m

Torr

TECHNICAL

INFORMATION

I-47