Mexico: Plugs, Voltage & Frequency
Type A/B · 127 V · 60 Hz
Mexico uses Type A, Type B plugs and runs on 127 volts at 60 Hz. This guide covers what the sockets look like and exactly what you need to power your devices there.
Plug Types in Mexico
- Type A — Type A is the flat, two-blade North American plug. The blades are parallel and unpolarized, with no ground pin.
- Type B — Type B adds a third round grounding pin below the two flat blades of Type A.
Voltage and Frequency
Mexico operates on 127 V at 60 Hz. Wall outlets deliver this as standard mains power. USB chargers and most modern electronics accept a wide input range, but always check the rating printed on your device.
Traveler Note: Adapter or Converter?
You need a Type A plug adapter to fit Mexico's sockets. Because Mexico supplies 127 V, appliances built for 220-240 V need a step-down voltage converter unless they are labelled 100-240 V (most phone and laptop chargers are).
Mexico is officially 127 V; some newer buildings also offer 220 V outlets for large appliances.
Frequently Asked Questions
Do I need a voltage converter or just an adapter for Mexico?
You need a Type A plug adapter for Mexico's sockets. A voltage converter is only required for devices that are not dual-voltage: Mexico runs on 127 V at 60 Hz, so single-voltage 100-120 V appliances need a step-up converter and 220-240 V appliances need a step-down converter. Most phone and laptop chargers are 100-240 V and need only the adapter.
What plug type does Mexico use?
Mexico uses Type A, Type B. You may encounter more than one type in hotels and older buildings.
Can I charge my phone or laptop in Mexico?
Almost certainly. Phone and laptop chargers are normally rated 100-240 V and only need a Type A plug adapter, not a voltage converter. Check the INPUT line on the charger to confirm.