CONVERSION FACTORS, U.S. CUSTOMARY TO METRIC (ST) 
UNITS OF MEASUREMENT 
U.S. customary units of measurement used in this report can be converted 
to metric (SI) units as follows: 
EE 
Multiply 
by 
To obtain 
SS SS ee 
inches 
square inches 
cubic inches 
feet 
square feet 
cubic feet 
yards 
Square yards 
cubic yards 
miles 
square miles 
knots 
acres 
foot-pounds 
millibars 
ounces 
pounds 
ton, long 
ton, short 
degrees (angle) 
Fahrenheit degrees 
25.4 
2.54 
6.452 
16. 39 
30. 39 
0.3048 
0.0929 
0.0283 
0.9144 
0.836 
0.7646 
1.6093 
259.0 
1.8532 
0.4047 
1.3558 
1.0197 
28.35 
453.6 
0.4536 
1.0160 
0.9072 
0.1745 
5/9 
x 1073 
millimeters 
centimeters 
Square centimeters 
cubic centimeters 
centimeters 
meters 
square meters 
cubic meters 
meters 
square meters 
cubic meters 
kilometers 
hectares 
kilometers per hour 
hectares 
newton meters 
kilograms per square centimeter 
grams 
grams 
kilograms 
metric tons 
metric tons 
radians 
Celsius degrees or Kelvins! 
SS eee ee 
lTo obtain Celsius (C) temperature readings from Farenheit (F) readings, 
use formula: 
Cr 705/952) 
To obtain Kelvin (K) readings, use formula: 
K = (5/9) (F -32) + 273.15. 
