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CEVMS and Driver Visual Behavior Study - Peer reviewed report

SI* (Modern Metric) Conversion Factors

APPROXIMATE CONVERSIONS TO SI UNITS
SYMBOL WHEN YOU KNOW MULTIPLY BY TO FIND SYMBOL

LENGTH

in
inches 25.4 millimeters mm
ft
feet 0.305 meters m
yd
yards 0.914 meters m
mi
miles 1.61 kilometers km

AREA

in2
square inches 645.2 square millimeters mm2
ft2
square feet 0.093 square meters m2
yd2
square yard 0.836 square meters m2
ac
acres 0.405 hectares ha
mi2
square miles 2.59 square kilometers km2

VOLUME

fl oz
fluid ounces 29.57 milliliters mL
gal
gallons 3.785 liters L
ft3
cubic feet 0.028 cubic meters m3
yd3
cubic yards 0.765 cubic meters m3

NOTE: volumes greater than 1000 L shall be shown in m3

MASS

oz
ounces 28.35 grams g
lb
pounds 0.454 kilograms kg
T
short tons (2000 lb) 0.907 megagrams (or "metric ton") Mg (or "t")
TEMPERATURE (exact degrees)
oF
Fahrenheit

5 (F-32)/9
or (F-32)/1.8

Celsius oC

ILLUMINATION

fc
foot-candles 10.76 lux lx
fl
foot-Lamberts 3.426 candela/m2 cd/m2

FORCE and PRESSURE or STRESS

lbf
poundforce   4.45   newtons N
lbf/in2
poundforce per square inch 6.89 kilopascals kPa
Updated: 09/05/2014
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