Converting one unit to another in simple nowadays with the help of search engines or online tools. However most of these tools convert elements from one unit to another particular unit. But I recently came across an online tool that can convert from one unit to all the other relevant units with an action of a click.
Peters1.dk have some cool set of online tools for engineers. Some of the popular unit conversions available in this site are Distance, Weight, Pressure, Speed,Volume, Temperature, Time etc. Simply enter the value in one unit, and click on Calculate, this will convert the element to various other units.
http://www.peters1.dk/webtools/conversion.php?sprog=en
