Romania runs on 230 V at 50 Hz, with sockets following Types C and F. A converter can stay at home; Romania supplies 230 V.
The same socket system is used in Finland, Albania, Hungary and Portugal, so one adapter covers all of them. Nearby but different: Ireland, Gibraltar and the Isle of Man – an adapter for Romania will not fit there. Across Europe this setup is common: 31 of 50 countries.
Protective earth
Grounded and ungrounded sockets may occur
Romania has sockets with a protective earth (Type F) and without (Type C). A plug that fits mechanically does not guarantee earthing.