Before you pack: Belize uses Types A and B, 110 V and 60 Hz. The grid in Belize delivers 110 V. Dual-voltage gear copes; single-voltage 230 V devices do not. The grid runs at 60 Hz. Chargers do not care; mains-synchronised clocks and simple motors do.
The same socket system is used in Honduras, Trinidad and Tobago, U.S. Virgin Islands and Mexico, so one adapter covers all of them. Travelling further to Grenada, Dominica and Guadeloupe means a different adapter. In North and Central America, 24 of 31 recorded destinations use exactly this combination.
Protective earth
Grounded and ungrounded sockets may occur
Earthed sockets (Type B) and unearthed ones (Type A) exist side by side. For metal-bodied appliances the protective-earth path is what matters.
110 V is the catch here, not the plug – bring dual-voltage gear. The 60 Hz supply matters for motors and mains clocks, not for chargers. Check your own device →
Types A and B – that is what you will find in Belize (110 V, 60 Hz).
Do I need a voltage converter for Belize?
At 110 V it depends on the rating plate: “100–240 V” is fine, single-voltage gear is not.
An adapter changes the plug shape only, not voltage or frequency. Belize supplies 110 V at 60 Hz – check the rating plate on your device. How to read a rating plate →
If a socket gets hot, crackles or smells burnt, unplug the device straight away.