Environmental Engineering Problems and Solutions

Appendix 1: Conversion Table

To Convert From

To

Multiply By

AREA

acre

sq ft

43,560

acre

sq meters

4047

acre

sq miles

1.562 10 ?3

sq in

sq cm

6.452

sq ft

sq meters

0.0929

sq ft

acres

2.2956 10 ?5

sq cm

sq in

0.155

sq cm

sq ft

0.00108

sq meter

sq ft

10.76

sq km

sq mile

0.3861

sq km

sq ft

1.076 10 7

sq km

acres

247.1

DENSITY

gm/cu cm

kg/cu meter

1000

gm/cu cm

kg/liter

1

gm/cu cm

lbs/cu ft

62.43

gm/cu cm

lbs/gal (U.S.)

8.345

gm/cu cm

lbs/gal (Br.)

10.022

kg/cu meter

gm/cu cm

0.001

kg/cu meter

kg/liter

0.001

kg/cu meter

lbs/cu ft

0.0624

lbs/cu in

kg/cu meter

2.768 10 4

lbs/cu ft

kg/liter

0.01602

lbs/cu ft

kg/cu meter

16.018

lbs/cu ft

lbs/gal (U.S.)

0.1337

lbs/gal (U.S.)

kg/liter

0.1198

lbs/gal (U.S.)

lbs/cu ft

7.48

FLOW RATE

cu ft/sec

gal/min

448.8

cu ft/sec

liters/sec

28.32

cu ft/sec

mil gal/day

0.6462

cu m/hr

gal/min

4.4

FLOW RATE

gal/min

cu ft/sec

0.00223

gal/min

cu ft/min

0.1337

gal/min

liters/sec

0.0631

liters/sec

gal/min

15.85

liters/sec

cu ft/min

2.119

mil gal/day

cu ft/sec

1.547

LENGTH

feet

cm

30.48

inch

cm

2.54

km

mile

0.6214

km

feet

3280.8

meter

inch

39.37

meter

feet

3.281

meter

mile

6.21 10 ?4

mile

feet

5280

mile

km

1.6093

MASS

gram

lb

2.205 10 ?3

gram

ounce

0.03527

gram

grain

15.43

kg

lb

2.205

lb

grain

7000

lb

gram

453.6

lb

ounce

16

POWER

Btu

cal

252

Btu

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