What is the quick menu located at the bottom right of the page ?
When you select a category with more than 19 items then you should get the quick menu which will help you to locate the unit you want to use. So for example if you want to convert kilometers to meters hit from the length category the “K” and you will jump to the kilometer option. In the next page, again with the use of the quick menu, by hitting the “M” you will jump to the unit names that start with the letter M.