Conversions
Here are
some raw numbers for those so inclined or if times get harder:
Metric
conversion chart
This metric conversion table
contains
APPROXIMATE factors. Most are NOT EXACT
|
APPROXIMATE
CONVERSIONS
FROM
STANDARD / US CUSTOMARY UNITS
TO
SI / METRIC 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
|
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
|
oF
|
Fahrenheit
|
(F-32) x 5 / 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
|
|
APPROXIMATE
CONVERSIONS
FROM
SI / METRIC UNITS
TO
STANDARD / US CUSTOMARY UNITS
|
SYMBOL
|
WHEN YOU KNOW
|
MULTIPLY BY
|
TO FIND
|
SYMBOL
|
LENGTH
|
mm
|
millimeters
|
0.039
|
inches
|
in
|
m
|
meters
|
3.28
|
feet
|
ft
|
m
|
meters
|
1.09
|
yards
|
yd
|
km
|
kilometers
|
0.621
|
miles
|
mi
|
AREA
|
mm2
|
millimeters
|
0.0016
|
square inches
|
in2
|
m2
|
square meters
|
10.764
|
square feet
|
ft2
|
m2
|
square meters
|
1.195
|
square yards
|
yd2
|
ha
|
hectares
|
2.47
|
acres
|
ac
|
km2
|
square kilometers
|
0.386
|
square miles
|
mi2
|
VOLUME
|
mL
|
milliliters
|
0.034
|
fluid ounces
|
fl oz
|
L
|
liters
|
0.264
|
gallons
|
gal
|
m3
|
cubic meters
|
35.314
|
cubic feet
|
ft3
|
m3
|
cubic meters
|
1.307
|
cubic yards
|
yd3
|
MASS
|
g
|
grams
|
0.035
|
ounces
|
oz
|
kg
|
kilograms
|
2.205
|
pounds
|
lb
|
Mg (or
"t")
|
megagrams
(or "metric ton")
|
1.103
|
short tons (2000
lb)
|
T
|
TEMPERATURE
|
oC
|
Celsius
|
1.8C + 32
|
Fahrenheit
|
oF
|
ILLUMINATION
|
lx
|
lux
|
0.0929
|
foot-candles
|
fc
|
cd/m2
|
candela/m2
|
0.2919
|
foot-Lamberts
|
fl
|
FORCE and PRESSURE or STRESS
|
N
|
newtons
|
0.225
|
poundforce
|
lbf
|
kPa
|
kilopascals
|
0.145
|
poundforce per
square inch
|
lbf/in2
|
|
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