SI CONVERSION FACTORS |
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APPROXIMATE CONVERSION FROM SI UNITS |
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Symbol |
When You Know |
Multiply By |
To Find |
Symbol |
LENGTH |
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mm m m km |
millimeters meters meters kilometers |
0.039 3.28 1.09 0.621 |
inches feet yards miles |
in ft yd mi |
AREA |
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mm2 m2 m2 ha km2 |
square millimeters square meters square meters hectares square kilometers |
0.0016 10.764 1.195 2.47 0.386 |
square inches square feet square yards acres square miles |
in2 ft2 yd2 ac mi2 |
VOLUME |
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ml m3 m3 l |
millimeters liters cubic meters cubic meters |
0.034 0.264 35.71 1.307 |
fluid ounces gallons cubic feet cubic yards |
fl oz ga ft3 yd3 |
MASS |
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g kg |
grams kilograms |
0.035 2.202 |
ounces pounds |
oz lb |
TEMPERATURE |
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°C |
Celsius |
1.8C+32 |
Fahrenheit |
°F |
WEIGHT DENSITY |
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kN/m3 |
kilonewton / cubic meter |
6.36 |
poundforce / cubic foot |
pcf |
FORCE and PRESSURE or STRESS |
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N kN kPa kPa |
newtons kilonewtons kilopascals kilopascals |
0.225 225 0.145 20.9 |
poundforce poundforce poundforce / square inch poundforce / square foot |
lbf lbf psi psf |