Metric conversion chart

From Science Made Simple, Inc.

Return to Metric Conversions

This metric conversion table contains
APPROXIMATE factors. Most are NOT EXACT

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APPROXIMATE CONVERSIONS

FROM
STANDARD / US CUSTOMARY UNITS

TO
SI / METRIC UNITS

SYMBOLWHEN YOU KNOWMULTIPLY BYTO FINDSYMBOL

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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