i have to make a program that converts Eng Units to Metric
does any one know of a chart or formulas to convert metric to Eng Units

this is what I've found:

online converters:
http://www.shodor.org/ucalc/unit_conv_tab.html
http://www.sciencemadesimple.com/conversions.html

conversion tables:
http://www.csgnetwork.com/converttable.html
http://www.tfhrc.gov/images/conversion.gif
http://www.sosmath.com/algebra/unitconv/unit3000/img1.gif

Why not just use online converters?

i am not looking for it because i need it i am looking for it because i want to learn from it

http://www.pbs.org/wgbh/nova/units.html