단위변환 및 간단한 계산

http://www.digikey.kr/ko/resources/conversion-calculators/conversion-calculator-length

http://info.ee.surrey.ac.uk/Workshop/advice/index.html#psp

Conversion tables

Conversion tables

From	To	Multiply by
acres	hectares	0.4047
arc minute	radians	2.9089E-04
arc second	radians	4.8481E-06
bars	pounds per square inch	14.508
centigrade	Fahrenheit	9/5 then add 32.0
degree of angle	radians	1.7453E-02
electron volts	joules	1.60210E-19
ergs	joules	1.0e-7
feet	metres	0.3048
gallon (UK)	litres	4.5461
gauss	teslas	1e-4
grams per litre	kilograms per metre3	1.0
hectares	acres	2.471
horsepower	watts	746
inches	metres	0.0254
inches	millimetres	25.4
kilometres	miles	0.6214
litres	gallons (UK)	0.21998
litres	pints	1.76
litres	metres3	0.001
metres	inches	39.37
miles	metres	1609.3
nautical miles	metres	1853.3
newtons	kilogramme-force	0.101972
ounces	grams	28.35
pint	litre	0.568
ton (UK)	kilograms	1 016.05
yard	metre	0.9144