Unit Conversions

LENGTH

Inches

Feet

Millimeters

Meters

1

12.00

3.93 x 10-2

39.37

8.33 x 10-2

1

3.281 x 10-3

3.281

25.4

304.8

1

1000

2.54 x 10-2

0.3048

1.000 x 103

1


AREA

Square Feet

Square Meters

1

10.76

0.0929

1

Acre

Hectare

1

2.47

0.405

1


TEMPERATURE

Fahrenheit (F)

Centigrade (C)

Kelvin (K)

°F = 9/5°C + 32

°C= 5/9(°F-32)

°K = °C + 273


VOLUME

Cubic Feet

Gallon (US)

1000 Gallons

Liters

Cubic Meter

(Kiloliter)

1

0.1337

133.7

3.531 x 10-2

35.31

7.481

1

1000

0.2642

264.2

7.481 x 10-3

1.000 x 10-3

1

2.642 x 10-4

0.2642

28.32

3.786

3786

1

1000

2.832 x 10-2

3.786 x 10-3

3.768

1.000 x 10-3

1


A hectoliter (hL) is 100 liters (0.1kL) and is equivalent to 26.4 US Gallons

MASS

Pounds

Tons(US)

Grams

Kilograms

Tons (Metric)

1

2000

2.205 x 10-3

2.205

2205

5.000 x 10-4

1

1.102 x 10-6

1.102 x 10-3

1.102

453.6

9.027 x 105

1

1000

1.000 x 106

0.4536

907.2

1.000 x 10-3

1

1000

4.536 x 10-4

0.9072

1.000 x 10-6

1.000 x 10-3

1


VOLUMETRIC FLOW RATE

ft3/s

1000 gal/hr

gal/min

L/s

kL/s

1

3.447 x 10-2

2.205 x 10-3

3.531 x 10-2

35.31

29.01

1

6.460 x 10-2

1.027

1027

485.0

15.48

1

15.85

1.585 x 104

28.32

0.9737

6.309 x 10-2

1

1000

2.832 x 10-2

9.737 x 10-4

6.309 x 10-5

1.000 x 10-3

1


DENSITY (Mass/Volume)

lb/ft3

g/cm3

Kg/m3

1

62.4

6.240 x 10-2

1.602 x 10-2

1

1.000 x 10-3

16.02

1000

1


VISCOSITY

lb/ft/hr

Centipoise

Pascal.second

1

2.419

2419

0.4134

1

1000

4.134 x 10-2

1.000 x 10-3

1


THERMAL CONDUCTIVITY

Btu/hr/ft3/(°F/ft)

W/m2/(°C/m)

1

0.5778

1.731

1


DIFFUSIVITY

ft2/hr

m2/s

1

3.875 x 104

2.581 x 10-5

1


HEAT CAPACITY

Btu/lb/°F

J/kg/°C

1

0.239

4.187

1


HEAT TRANSFER COEFFICIENT

Btu/hr/ft2/°F

W/m2/°C

1

0.1761

5.68

1


MASS TRANSFER COEFFICIENT

lb-mole/hr/ft2/mole fraction

kg-mole/s/m2/mole fraction

1

737.5

1.356 x 10-3

1


FORCE

lbf

Newton

1

0.2250

4.444

1


PRESSURE

mm Hg

psi

Atmosphere

Bar

Pascal

1

51.71

760.0

750.1

7.501 x 10-3

1.934 x 10-2

1

14.70

14.50

1.450 x 10-4

1.316 x 10-3

6.805 x 10-2

1

0.9869

9.870 x 10-6

1.333 x 10-3

6.895 x 10-2

1.013

1

1.000 x 10-5

133.3

6.895 x 103

1.013 x 105

1.000 x 105

1


HEAT, ENERGY, WORK

BTU

kWhr

ftlbf

Calorie

Joule

1

3413

1.285 x 10-3

3.966 x 10-3

9.484 x 10-4

2.930 x 10-4

1

3.766 x 10-7

1.162 x 10-6

2.772 x 10-7

778.2

2.655 x 106

1

3.086

0.7376

252.0

8.604 x105

0.3241

1

0.2390

1055

3.600 x 106

1.356

4.184

1


POWER

Horsepower

Kilowatt

ftlbf/s

BTU/s

Watt

1

1.341

1.818 x 10-3

1.415

1.341 x 10-3

0.7457

1

1.356 x 10-3

1.055

1.00 x 10-3

550.0

737.56

1

778.16

0.7376

0.7068

0.9478

1.285 x 10-3

1

9.478 x 10-4

745.7

1000

1.356

1055

1


VOLUMETRIC FLUX

gal/ft2/hr

m3/m2/s

L/m2/s

1

10,329

10.24

9.767 x 10-5

1

1.000 x 10-3

9.767 x 10-2

1000

1


ENERGY FLUX

Btu/ ft2/hr

W/m2

1

0.3170

3.155

1


GAS CONSTANT

8.314 kPa m3/kg-mole K(J/g-mole K)


Units:

British Thermal Unit = BTU

Foot =ft

Gallon = gal

Gram = g

Hour = hr

Joule = J

Kilogram = kg

Liter = L

Meter = m

Newton = N

Pascal = Pa

Pound = lb

Pounds per square inch = psi

Second = s

Watt = W