PlugVoltage

Plug Types A–O Explained

Use this as a shape reference, then check voltage separately. A plug that fits can still be unsafe.

The plug shape only tells you whether your plug will physically fit the socket — it says nothing about the voltage. A Type A plug fits sockets in both the 120V US and the 100V Japan; a Type C plug fits 220–240V sockets across Europe and Asia. An adapter changes the shape, never the voltage.

Shape is not voltage

Plug exampleWhy it mattersWhat to check
Type AUsed in both 120V North America and 100V Japan.Voltage and frequency still decide device safety.
Type CPhysically fits many European-style sockets but does not provide grounding.Use only with suitable low-current, ungrounded devices.
Type NUsed in Brazil, where 127V and 220V regions both exist.Confirm the city or outlet voltage before single-voltage gear.
Type A 100–127V · 9 countries Type B · grounded 100–127V · 7 countries Type C 220–240V · 27 countries Type D · grounded 220–240V · 2 countries Type E · grounded 220–240V · 4 countries Type F · grounded 220–240V · 14 countries Type G · grounded 220–240V · 4 countries Type I · grounded 220–240V · 4 countries Type J · grounded 220–240V · 1 countries Type K · grounded 220–240V · 1 countries Type L · grounded 220–240V · 2 countries Type M · grounded 220–240V · 2 countries Type N · grounded both · 2 countries Type O · grounded 220–240V · 1 countries

The Europlug (Type C) is the most widely accepted shape — it physically fits Type E, F, J, K, L and N sockets. At the other end, the UK Type G, Australian Type I, and Swiss Type J fit only their own sockets.