What plug type is used in Mexico?

Type A and Type B sockets, Type A being the most common.

What is the mains voltage in Mexico?

127 V at 60 Hz. Anything not marked 100-240 V on its own label needs a converter rather than a plug adapter.

This information may change. Always check the official source.Last verified: August 2026 by Ondřej Kadlec

Nominal voltage is 127 V, and older buildings often have unearthed Type A sockets only.

Arriving from the United States or CanadaPlugs go straight in and the voltage matches. Nothing to pack.
Arriving from the UK or IrelandA plug adapter, and appliances marked 100-240 V. Anything single-voltage needs a converter.
Arriving from most of continental EuropeA plug adapter, and appliances marked 100-240 V. Anything single-voltage needs a converter.
Arriving from Australia or New ZealandA plug adapter, and appliances marked 100-240 V. Anything single-voltage needs a converter.

Socket types, voltage and frequency are the nominal domestic supply as published in IEC/TR 60083 and the national standards it lists.

Mexican sockets are Type and at 127 V, and older buildings often have unearthed two-slot outlets only.

Sockets in Mexico are Type and at 127 V, 60 Hz - the American standard, at a nominal voltage a few volts above the US.

Unearthed Type outlets are common. Newer buildings and hotels have the three-hole Type , but a two-slot socket with no earth is a normal sight in older housing.
American and Canadian plugs fit straight in. Everyone else needs an adapter.
127 V behaves like 120 V. Anything built for the US works; a 230 V-only European appliance does not.
Voltage dips are worth planning for in older neighbourhoods, which is why sensitive equipment is often run through a surge protector - hotels in this class usually provide one for the television, not for you.

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Sources (1)

What this guide was checked against. Rules and prices change — follow the official link before you rely on a detail.