PLUG AND VOLTAGE
Pick your home country and destination to see plug types, voltage and frequency, and whether an adapter or transformer is likely.
Compare household plugs and voltage between two countries.
Typical household values from IEC World Plugs. Check the socket in front of you.
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READ BEFORE YOU GO
How it works, examples, limits and sources behind the tool.
Each country is mapped to IEC plug types and a typical household voltage and frequency. If home and destination share no plug type, you need an adapter. If they sit in different voltage bands (about 100–127V versus 220–240V), a single-voltage device needs a transformer.
Read the device label first. A charger marked 100–240V only needs a shape change. The tool’s country row is a typical household value, not the socket on that hotel wall. USB ports on the wall still leave a laptop on its original charger.
Japan is A/B at 100V; the UK is G at 230V. A Tokyo-to-London trip needs both an adapter and, for a 100V-only hair dryer, a transformer. A laptop charger marked 100–240V needs only the adapter.
Shanghai (220V, often type I on the wall) to Taipei (110V, A/B): a mainland type-I plug usually will not fit Taiwan’s parallel pins, so you still need an adapter; a 220V-only kettle must not go on 110V even if some appliance cords are type A. New York to Paris is A/B at 120V versus C/E/F at 230V: USB chargers change shape; a US travel kettle does not go in the wall.
Use it before packing chargers, buying a universal adapter, or taking high-power appliances such as hair tools.
Use it when two destinations on one ticket use different IEC letters (Hong Kong G versus mainland C/I). The power-plug guide on this site covers wattage and converters; this page is the country lookup.
Treating a travel adapter as a voltage converter is the main risk. Another is assuming one plug covers a whole region: the UK, Ireland and Singapore use G, while most of continental Europe uses C/E/F. Japan also splits 50Hz and 60Hz by region.
A 50W “converter” will not run a 1800W dryer. Daisy-chaining a household power strip onto a travel adapter repeats the origin voltage on every outlet unless that strip is dual-voltage too.
Plug types and voltages follow IEC World Plugs typical values for households. Some countries mix standards (Brazil 127/220V, Thailand several types). Always check the socket in front of you and the label on the device.
The tool does not list every rare socket in a country, and it does not rate transformer brands. Frequency (50/60Hz) matters for some motors; laptop chargers marked 50/60Hz ignore it.
An adapter only changes the plug shape. A transformer changes the voltage. Dual-voltage chargers (100–240V) need an adapter only.
Japan uses type A and B plugs at 100V. East Japan is 50Hz and west Japan is 60Hz.