Compare the plug shapes, voltage and frequency in Brazil and Guinea-Bissau, and find out which adapter you need before you travel.
No adapter needed
You will not need a plug adapter — Brazil and Guinea-Bissau share at least one common plug shape (Type C). The mains frequency is also different (60 Hz vs 50 Hz). This rarely matters for electronics but can affect motor-driven devices like clocks and shavers.
Frequency differs (60 Hz vs 50 Hz). Rarely an issue for most electronics, but can affect motor-driven devices like clocks and shavers.
Brazil (home)
Guinea-Bissau (destination)
Electrical specifications in Guinea-Bissau
Voltage
Frequency
More about plugs in Guinea-Bissau
In Guinea-Bissau, 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-Bissau can be one of 2 different shapes — Type C, Type F, and your plug needs to physically match the socket to fit.
Full Guinea-Bissau plug guide