Tested tool guide
Tested browser tools
Checked August 16, 2026
What World Power Plug Guide does, with a checked example
This tool takes a country name and returns the plug type letter or letters used there, the standard mains voltage, and the AC frequency (50Hz or 60Hz), drawn from a reference table rather than calculated live. Most people expect a single plug shape and a single voltage per country. Two things tend to surprise them: many countries list more than one accepted plug type at once, and matching the plug shape with an adapter does not mean the electricity is compatible, since voltage and frequency are separate numbers a device also has to tolerate.
Worked example
A concrete input and expected output from the current implementation.
->
Expected output
Plug types A and B, 100V, 50Hz (eastern Japan, including Tokyo) / 60Hz (western Japan, including Osaka).
Japan runs on 100V, which is lower than most of the world's 220-240V, and it is one of the few countries split between two mains frequencies by region, so the tool returns both.