Conversion Factor Table
http://www.uwosh.edu/students/wallip27/convert.html
The interface is a bit clumsy, but the information is thorough. Here's how it works: You want to know how many centimeters are in 10 meters. You find meters in the table, see that the conversion factor (or c.f.) is 100 (100 centimeters equal 1 meter), and multiply that number by 10. Ten meters equal 1000 centimeters.