The best type voltage converter for stepping down 220/240 has two settings. One for 50 watts for small stuff, one for 1875 or 2000 watts for heating appliances like hair dryers, water kettles, irons. You wil still need a plug adapter for the foreign outlet because the converters prongs are not long enough to fit in the round recessed Euro outlets. Converters only take two prong US plugs so you also need an adapter to fit your US three prong plugs down to two prong, commonly found at any hardware store or even Walgreens. Converters get hot so give it a rest, don't use more than an hour at a time and unplug when not in use.