In Spain, there are two types of plugs: type C and type F. Type C has two round pins, while type F has two round pins with two earth clips on the side. Both types of plugs can be found throughout Spain, and they can take any plug type with two round prongs, as long as there is no third grounding prong. The standard voltage in Spain is 230V, and the frequency is 50Hz. If you are traveling from the United States, you will need a power plug adapter for sockets type F, and you may also need a voltage converter because the standard voltage in Spain (230V) is higher than in the United States of America (120V) . It is important to note that a travel adapter only allows you to plug any UK electrical appliance into a foreign electrical socket, but it does not convert the voltage or frequency.