Plug fits, voltage differs: the 7 countries

The seven destinations

Six of the destinations have sockets that take Type A or B plugs but supply 220–230 V. Aruba is the reverse case: its Type F sockets take the E/F hybrid plug common across Europe, but the supply is 127 V.

Destination	Sockets	Voltage	Frequency	Origins
Aruba	A/B/F	127 V	60 Hz	58
Jordan	B/C/D/F/G/J	230 V	50 Hz	22
Laos	A/B/C/E/F	230 V	50 Hz	22
Lebanon	A/B/C/D/G	220 V	50 Hz	21
Peru	A/B/C	220 V	60 Hz	21
Philippines	A/B/C	220 V	60 Hz	21
Thailand	A/B/C/O	220 V	50 Hz	21

Jordan lists Type B but not Type A. Because a B socket also takes the two-blade A plug, Type A and B plugs both go in. All six also list Type C, so the flat two-pin plug fits there as well; whether that plug’s voltage matches depends on where it comes from.

“Origins” is the number of countries whose plugs all fit there while their voltage range differs. Aruba leads because so many countries use the E/F hybrid plug.

Who is affected

The largest group is 21 origin countries that each meet six of these destinations. All of them use Types A and B at 100–127 V: the Bahamas, Barbados, Canada, Colombia, Costa Rica, Cuba, the Dominican Republic, Ecuador, El Salvador, Guatemala, Honduras, Jamaica, Japan, Mexico, Nicaragua, Panama, Puerto Rico, Taiwan, Trinidad and Tobago, the United States and Venezuela. For a visitor from any of them, Jordan, Laos, Lebanon, Peru, the Philippines and Thailand have familiar-looking sockets on a 220–230 V supply.

Aruba meets two of them: Jordan and Laos.

Another 58 countries meet exactly one, Aruba. Each of them uses only plug types that its Type A, B and F sockets accept. By region: 34 in Europe, 14 in Asia, 8 in Africa, 2 in the Americas.

How rare it is

Across all 19,182 pairs, a different voltage range usually comes with a different plug. Of these, 5,104 pairs cross the voltage divide, and in 4,918 of them at least one plug from home does not fit. That leaves 186 pairs, 1.0 % of the total, where the plug gives no hint that the supply has changed.

A further 276 pairs involve Brazil, where the voltage is 127 V / 220 V depending on the state and municipality. In 2 of them every plug from home fits; in the rest an adapter is needed as well.

Frequency on top

Voltage is not the only thing that changes. In 133 of the 186 pairs the frequency changes too, between 50 Hz and 60 Hz, and in 6 more it varies by area because Japan is involved. Peru and the Philippines are the exceptions on the destination side: both run at 60 Hz, so a trip there from a 60 Hz country such as the United States changes the voltage range but not the frequency.

Aruba runs at 60 Hz. Of the 58 countries whose plugs fit only there, 55 run at 50 Hz, so for them the frequency changes as well as the voltage.

Close, but not the same

Some trips change the voltage within a range. Japan supplies 100 V; the United States 120 V. The plugs are the same and both countries are on the 100–127 V range, so the checker reports “same range” rather than “same” (Japan → United States). Japan’s frequency also varies: 50 Hz in the east and 60 Hz in the west.

Within the higher range, a trip from India (230 V) to Thailand (220 V) counts as the same voltage, because the values are within 10 V.

What to check

None of this tells you whether a given device will work, because that depends on the device, not the country. Check your device’s input rating label: it states the voltage and frequency the device accepts. The adapter checker shows the voltage and frequency on both ends of any trip, and the voltage page lists every 100–127 V and 60 Hz country.

Sources

Wikidata (CC0): electrical plug type (P2853), mains voltage (P2884) and frequency, retrieved 28 October 2026, checked against national and technical sources
Wikipedia, Mains electricity by country (CC BY-SA 4.0): cross-check of plug types, voltage and frequency, facts only
PlugAtlas sources and method, including the socket fit rules

When the plug fits but the voltage doesn’t