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Metric Conversion Page (Landscape)

SI* (MODERN METRIC) Conversion Factors

APPROXIMATE CONVERSIONS TO SI UNITS

SYMBOL WHEN YOU KNOW MULTIPLY BY TO FIND SYMBOL SYMBOL WHEN YOU KNOW MULTIPLY BY TO FIND SYMBOL
LENGTH
in inches 25.4 millimeters mm mm millimeters 0.039 inches in
ft feet 0.305 meters m m meters 3.28 feet ft
yd yards 0.914 meters m m meters 1.09 yards yd
mi miles 1.61 kilometers km km kilometers 0.621 miles mi

 

SYMBOL WHEN YOU KNOW MULTIPLY BY TO FIND SYMBOL SYMBOL WHEN YOU KNOW MULTIPLY BY TO FIND SYMBOL
AREA
in2 square inches 645.2 square millimeters mm2 mm2 square millimeters 0.0016 square inches in2
ft2 square feet 0.093 square meters m2 m2 square meters 10.764 square feet ft2
yd2 square yard 0.836 square meters m2 m2 square meters 1.195 square yards yd2
ac acres 0.405 hectares ha ha hectares 2.47 acres ac
mi2 square miles 2.59 square kilometers km2 km2 square kilometers 0.386 square miles mi2

 

SYMBOL WHEN YOU KNOW MULTIPLY BY TO FIND SYMBOL SYMBOL WHEN YOU KNOW MULTIPLY BY TO FIND SYMBOL
VOLUME
fl oz fluid ounces 29.57 milliliters mL mL milliliters 0.034 fluid ounces fl oz
gal gallons 3.785 liters L L liters 0.264 gallons gal
ft3 cubic feet 0.028 cubic meters m3 m3 cubic meters 35.314 cubic feet ft3
yd3 cubic yards 0.765 cubic meters m3 m3 cubic meters 1.307 cubic yards yd3

 

SYMBOL WHEN YOU KNOW MULTIPLY BY TO FIND SYMBOL SYMBOL WHEN YOU KNOW MULTIPLY BY TO FIND SYMBOL
MASS
oz ounces 28.35 grams g g grams 0.035 ounces oz
lb pounds 0.454 kilograms kg kg kilograms 2.202 pounds lb
T short tons (2000 lb) 0.907 megagrams (or "metricton") Mg (or "t") Mg (or "t") megagrams (or "metric ton") 1.103 short tons (2000 lb) T

 

SYMBOL WHEN YOU KNOW MULTIPLY BY TO FIND SYMBOL SYMBOL WHEN YOU KNOW MULTIPLY BY TO FIND SYMBOL
TEMPERATURE (exact degrees)
°F Fahrenheit 5 (F-32)/9 or (f-32)/1.8 Celsius °C °C Celsius 1.8C+32 Fahrenheit °F

 

SYMBOL WHEN YOU KNOW MULTIPLY BY TO FIND SYMBOL SYMBOL WHEN YOU KNOW MULTIPLY BY TO FIND SYMBOL
ILLUMINATION
fc foot-candles 10.76 lux lx lx lux 0.0929 foot-candles fc
fl foot-Lamberts 3.426 candela/m2 cd/m2 cd/m2 candela/m2 0.2919 foot-Lamberts fl

 

SYMBOL WHEN YOU KNOW MULTIPLY BY TO FIND SYMBOL SYMBOL WHEN YOU KNOW MULTIPLY BY TO FIND SYMBOL
FORCE and PRESSURE or STRESS
lbf poundforce 4.45 newtons N N newtons 0.225 poundforce lbf
lbf/in2 poundforce per square inch 6.89 kilopascals kPa kPa kilopascals 0.145 poundforce per square inch lbf/in2

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

*SI is the symbol for the International System of Units. Appropriate rounding should be made to comply with Section 4 of ASTM E380.
(Revised March 2003)

Last updated: Thursday, November 1, 2012