Compatibility summary
Your Mexico plug may fit in Japan outlets, as both use at least one common plug type. Voltage differs by more than 20% — a voltage converter may be needed for some appliances.
Plug comparison
Mexico plug types: A B
Japan plug types: A B
Both countries share at least one plug type (A B and A B), so some plugs may work without an adapter. Check your appliance.
Voltage comparison
Mexico: 127V, 60Hz
Japan: 100V, 50Hz
Voltage converter recommended (Mexico 127V vs Japan 100V).