Compare the plug shapes, voltage and frequency in Sierra Leone and Guinea, and find out which adapter you need before you travel.
Adapter required
Yes — coming from Sierra Leone, you will need a travel adapter for Guinea. Sierra Leone uses Type G plugs, and Guinea uses Type C/Type F, so the pin shapes will not fit any wall socket.
Sierra Leone (home)
Guinea (destination)
Electrical specifications in Guinea
Voltage
Frequency
More about plugs in Guinea
In Guinea, the standard power plug is Type C and Type F. The country runs on 230 volts at 50 Hz. That means wall sockets in Guinea can be one of 2 different shapes — Type C, Type F, and your plug needs to physically match the socket to fit.
Full Guinea plug guide