Countries around the world operate with different power voltages and frequencies commonly know as Hertz after Heinrich Hertz, who worked from 1889 until his early death in 1894 as a professor at the University of Bonn. Before coming to Bonn, Hertz had already demonstrated the existence of electromagnetic waves experimentally and therewith proved the “Maxwell equations” of electromagnetic theory.
These equations, unchanged to this day, are known as the basics of the description of all electrical and magnetical phenomena.
One fundamental parameter of waves is their frequency, the number of oscillations per second. Honouring Heinrich Hertz, this unit is named after him (1 Hertz = 1 cycle per second).
Here is a list for your convenience listing the most used electrical power systems.
Electric Power Voltages and Frequencies (Hertz) Around the World
| Country - Voltage (V) - Frequency (Hz) |
|---|
| Afghanistan - 220V - 50Hz |
| Albania - 220V* - 50Hz |
| Algeria - 230V - 50Hz |
| American Samoa - 120V - 60Hz |
| Andorra - 230V - 50Hz |
| Angola - 220V - 50Hz |
| Anguilla - 110V - 60Hz |
| Antigua - 230V* - 60Hz |
| Argentina - 220V - 50Hz |
| Armenia - 220V - 50Hz |
| Aruba - 127V* - 60Hz |
| Australia - 240V - 50Hz |
| Austria - 230V - 50Hz |
| Azerbaijan - 220V - 50Hz |
| Azores - 220V* - 50Hz |
| Bahamas - 120V - 60Hz |
| Bahrain - 230V* - 50Hz* |
| Balearic Islands - 220V - 50Hz |
| Bangladesh - 220V - 50Hz |
| Barbados - 115V - 50Hz |
| Belarus - 220V - 50Hz |
| Belgium - 230V - 50Hz |
| Belize - 110/220V - 60Hz |
| Benin - 220V - 50Hz |
| Bermuda - 120V - 60Hz |
| Bhutan - 230V - 50Hz |
| Bolivia - 220/230V* - 50Hz |
| Bosnia - 220V - 50Hz |
| Botswana - 231V - 50Hz |
| Brazil - 110/220V* - 60Hz |
| Brunei - 240V - 50Hz |
| Bulgaria - 230V - 50Hz |
| Burkina Faso - 220V - 50Hz |
| Burundi - 220V - 50Hz |
| Cambodia - 230V - 50Hz |
| Cameroon - 220V - 50Hz |
| Canada - 120V - 60Hz |
| Canary Islands - 220V - 50Hz |
| Cape Verde - 220V - 50Hz |
| Cayman Islands - 120V - 60Hz |
| Central African Republic - 220V - 50Hz |
| Chad - 220V - 50Hz |
| Channel Islands - 230V - 50Hz |
| Chile - 220V - 50Hz |
| China, People's Republic of - 220V - 50Hz |
| Colombia - 110V - 60Hz |
| Comoros - 220V - 50Hz |
| Congo, People's Rep. of - 230V - 50Hz |
| Congo, Dem. Rep. of (former Zaire) - 220V - 50Hz |
| Cook Islands - 240V - 50Hz |
| Costa Rica - 120V - 60Hz |
| Cote d'Ivoire (Ivory Coast) - 220V - 50Hz |
| Croatia - 230V - 50Hz |
| Cuba - 110/220V - 60Hz |
| Cyprus - 240V - 50Hz |
| Czech Republic - 230V - 50Hz |
| Denmark - 230V - 50Hz |
| Djibouti - 220V - 50Hz |
| Dominica - 230V - 50Hz |
| Dominican Republic - 110V - 60Hz |
| East Timor - 220V - 50Hz |
| Ecuador - 120-127V - 60Hz |
| Egypt - 220V - 50Hz |
| El Salvador - 115V - 60Hz |
| England (See United Kingdom) |
| Equatorial Guinea - 220V* - 50Hz |
| Eritrea - 230V - 50Hz |
| Estonia - 230V - 50Hz |
| Ethiopia - 220V - 50Hz |
| Faeroe Islands - 220V - 50Hz |
| Falkland Islands - 240V - 50Hz |
| Fiji - 240V - 50Hz |
| Finland - 230V - 50Hz |
| France - 230V - 50Hz |
| French Guiana - 220V - 50Hz |
| Gaza - 230V - 50Hz |
| Gabon - 220V - 50Hz |
| Gambia - 230V - 50Hz |
| Georgia - 220V - 50Hz |
| Germany - 230V - 50Hz |
| Ghana - 230V - 50Hz |
| Gibraltar - 240V - 50Hz |
| Great Britain (See United Kingdom) |
| Greece - 220V - 50Hz |
| Greenland - 220V - 50Hz |
| Grenada (Windward Is.) - 230V - 50Hz |
| Guadeloupe - 230V - 50Hz |
| Guam - 110V - 60Hz |
| Guatemala - 120V - 60Hz |
| Guinea - 220V - 50Hz |
| Guinea-Bissau - 220V - 50Hz |
| Guyana - 240V* - 60Hz* |
| Haiti - 110V - 60Hz |
| Honduras - 110V - 60Hz |
| Hong Kong - 220V* 50Hz |
| Hungary - 230V - 50Hz |
| Iceland - 220V - 50Hz |
| India - 230V - 50Hz |
| Indonesia - 127/230V* 50Hz |
| Iran - 230V - 50Hz |
| Iraq - 230V - 50Hz |
| Ireland (Eire) - 230 50Hz |
| Isle of Man - 240V - 50Hz |
| Israel - 220V - 50Hz |
| Italy - 230V - 50Hz |
| Ivory Coast (See Cote d'Ivoire) |
| Jamaica - 110V - 50Hz |
| Japan - 100V - 50/60Hz* |
| Jordan - 230V - 50Hz |
| Kenya - 240V - 50Hz |
| Kazakhstan - 220V - 50Hz |
| Kiribati - 240V - 50Hz |
| Korea, South - 220V - 60Hz |
| Korea, North - 220V - 50Hz |
| Kuwait - 240V - 50Hz |
| Laos - 230V - 50Hz |
| Latvia - 220V - 50Hz |
| Lebanon - 110/220V - 50Hz |
| Lesotho - 220V - 50Hz |
| Liberia - 120V - 60Hz |
| Libya - 127V* 50Hz |
| Lithuania - 220V - 50Hz |
| Liechtenstein - 230V - 50Hz |
| Luxembourg - 220V - 50Hz |
| Macau - 220V - 50Hz |
| Macedonia - 220V - 50Hz |
| Madagascar - 220V - 50Hz |
| Madeira - 220V - 50Hz |
| Malawi - 230V - 50Hz |
| Malaysia - 240V - 50Hz |
| Maldives - 230V - 50Hz |
| Mali - 220V - 50Hz |
| Malta - 240V - 50Hz |
| Martinique - 220V - 50Hz |
| Mauritania - 220V - 50Hz |
| Mauritius - 230V - 50Hz |
| Mexico - 127V - 60Hz |
| Micronesia (Federal States of) - 120V - 60Hz |
| Monaco - 127/220V - 50Hz |
| Mongolia - 220V 50Hz |
| Montenegro - 220V - 50Hz |
| Montserrat (Leeward Is.) - 230V - 60Hz |
| Morocco - 127/220V* 50Hz |
| Mozambique - 220V - 50Hz |
| Myanmar (formerly Burma) - 230V - 50Hz |
| Namibia - 220V - 50Hz |
| Nauru - 240V - 50Hz |
| Nepal - 230V - 50Hz |
| Netherlands - 230V - 50Hz |
| Netherlands Antilles - 127/220V* 50Hz |
| New Caledonia - 220V - 50Hz |
| New Zealand - 230V - 50Hz |
| Nicaragua - 120V - 60Hz |
| Niger - 220V - 50Hz |
| Nigeria - 240V - 50Hz |
| Northern Ireland (see United Kingdom) |
| Norway - 230V - 50Hz |
| Okinawa - 100V* - 60Hz |
| Oman - 240V* - 50Hz |
| Pakistan - 220V - 50Hz |
| Palmyra Atoll - 120V - 60Hz |
| Panama - 110V* - 60Hz |
| Papua New Guinea - 240V - 50Hz |
| Paraguay - 220V - 50Hz |
| Peru - 220V* - 60Hz* |
| Philippines - 220V - 60Hz |
| Poland - 230V - 50Hz |
| Portugal - 230V - 50Hz |
| Puerto Rico - 120V - 60Hz |
| Qatar - 240V - 50Hz |
| Reunion Island - 220V 50Hz |
| Romania - 230V - 50Hz |
| Russia - 220V - 50Hz |
| Rwanda - 230V - 50Hz |
| St. Kitts and Nevis (Leeward Is.) - 230V - 60Hz |
| St. Lucia (Windward Is.) - 240V - 50Hz |
| St. Vincent (Windward Is.) - 230V - 50Hz |
| Samoa - 230V - 50Hz |
| Saudi Arabia - 127/220V - 60Hz |
| Scotland (See United Kingdom) |
| Senegal - 230V - 50Hz |
| Serbia - 220V - 50Hz |
| Seychelles - 240V - 50Hz |
| Sierra Leone - 230V - 50Hz |
| Singapore - 230V - 50Hz |
| Slovak Republic - 230V - 50Hz |
| Slovenia - 220V - 50Hz |
| Somalia - 220V* - 50Hz |
| South Africa - 220/230V* - 50Hz |
| Spain - 230V - 50Hz |
| Sri Lanka - 230V - 50Hz |
| Sudan - 230V - 50Hz |
| Suriname - 127V - 60Hz |
| Swaziland - 230V - 50Hz |
| Sweden - 230V - 50Hz |
| Switzerland - 230V - 50Hz |
| Syria - 220V - 50Hz |
| Tahiti - 220V - 60Hz |
| Tajikistan - 220V - 50Hz |
| Taiwan - 110V - 60Hz |
| Tanzania - 230V - 50Hz |
| Thailand - 220V - 50Hz |
| Togo - 220V* 50Hz |
| Tonga - 240V - 50Hz |
| Trinidad & Tobago - 115V - 60Hz |
| Tunisia - 230V - 50Hz |
| Turkey - 230V - 50Hz |
| Turkmenistan - 220V - 50Hz |
| Uganda - 240V - 50Hz |
| Ukraine - 220V - 50Hz |
| United Arab Emirates - 220V* - 50Hz |
| United Kingdom - 230V* - 50Hz |
| United States of America - 120V - 60Hz |
| Uruguay - 220V - 50Hz |
| Uzbekistan - 220V - 50Hz |
| Vanuatu - 230V - 50Hz |
| Venezuela - 120V - 60Hz |
| Vietnam - 127/220V* - 50Hz |
| Virgin Islands (British and U.S.) - 115V - 60Hz |
| Wales (See United Kingdom) |
| Yemen, Rep. of - 220/230V - 50Hz |
| Zambia - 230V - 50Hz |
| Zimbabwe - 220V - 50Hz |
| * Voltage variations can occur and are common |
Electric Power Voltages and Frequencies (Hertz) Around the World
Afghanistan – 220V – 50Hz
Albania – 220V* – 50Hz
Algeria – 230V – 50Hz
American Samoa – 120V – 60Hz
Andorra – 230V – 50Hz
Angola – 220V – 50Hz
Anguilla – 110V – 60Hz
Antigua – 230V* – 60Hz
Argentina – 220V – 50Hz
Armenia – 220V – 50Hz
Aruba – 127V* – 60Hz
Australia – 240V – 50Hz
Austria – 230V – 50Hz
Azerbaijan – 220V – 50Hz
Azores – 220V* – 50Hz
Bahamas – 120V – 60Hz
Bahrain – 230V* – 50Hz*
Balearic Islands – 220V – 50Hz
Bangladesh – 220V – 50Hz
Barbados – 115V – 50Hz
Belarus – 220V – 50Hz
Belgium – 230V – 50Hz
Belize – 110/220V – 60Hz
Benin – 220V – 50Hz
Bermuda – 120V – 60Hz
Bhutan – 230V – 50Hz
Bolivia – 220/230V* – 50Hz
Bosnia – 220V – 50Hz
Botswana – 231V – 50Hz
Brazil – 110/220V* – 60Hz
Brunei – 240V – 50Hz
Bulgaria – 230V – 50Hz
Burkina Faso – 220V – 50Hz
Burundi – 220V – 50Hz
Cambodia – 230V – 50Hz
Cameroon – 220V – 50Hz
Canada – 120V – 60Hz
Canary Islands – 220V – 50Hz
Cape Verde – 220V – 50Hz
Cayman Islands – 120V – 60Hz
Central African Republic – 220V – 50Hz
Chad – 220V – 50Hz
Channel Islands – 230V – 50Hz
Chile – 220V – 50Hz
China, People’s Republic of – 220V – 50Hz
Colombia – 110V – 60Hz
Comoros – 220V – 50Hz
Congo, People’s Rep. of – 230V – 50Hz
Congo, Dem. Rep. of (former Zaire) – 220V – 50Hz
Cook Islands – 240V – 50Hz
Costa Rica – 120V – 60Hz
Cote d’Ivoire (Ivory Coast) – 220V – 50Hz
Croatia – 230V – 50Hz
Cuba – 110/220V – 60Hz
Cyprus – 240V – 50Hz
Czech Republic – 230V – 50Hz
Denmark – 230V – 50Hz
Djibouti – 220V – 50Hz
Dominica – 230V – 50Hz
Dominican Republic – 110V – 60Hz
East Timor – 220V – 50Hz
Ecuador – 120-127V – 60Hz
Egypt – 220V – 50Hz
El Salvador – 115V – 60Hz
England (See United Kingdom)
Equatorial Guinea – 220V* – 50Hz
Eritrea – 230V – 50Hz
Estonia – 230V – 50Hz
Ethiopia – 220V – 50Hz
Faeroe Islands – 220V – 50Hz
Falkland Islands – 240V – 50Hz
Fiji – 240V – 50Hz
Finland – 230V – 50Hz
France – 230V – 50Hz
French Guiana – 220V – 50Hz
Gaza – 230V – 50Hz
Gabon – 220V – 50Hz
Gambia – 230V – 50Hz
Georgia – 220V – 50Hz
Germany – 230V – 50Hz
Ghana – 230V – 50Hz
Gibraltar – 240V – 50Hz
Great Britain (See United Kingdom)
Greece – 220V – 50Hz
Greenland – 220V – 50Hz
Grenada (Windward Is.) – 230V – 50Hz
Guadeloupe – 230V – 50Hz
Guam – 110V – 60Hz
Guatemala – 120V – 60Hz
Guinea – 220V – 50Hz
Guinea-Bissau – 220V – 50Hz
Guyana – 240V* – 60Hz*
Haiti – 110V – 60Hz
Honduras – 110V – 60Hz
Hong Kong – 220V* 50Hz
Hungary – 230V – 50Hz
Iceland – 220V – 50Hz
India – 230V – 50Hz
Indonesia – 127/230V* 50Hz
Iran – 230V – 50Hz
Iraq – 230V – 50Hz
Ireland (Eire) – 230 50Hz
Isle of Man – 240V – 50Hz
Israel – 220V – 50Hz
Italy – 230V – 50Hz
Ivory Coast (See Cote d’Ivoire)
Jamaica – 110V – 50Hz
Japan – 100V – 50/60Hz*
Jordan – 230V – 50Hz
Kenya – 240V – 50Hz
Kazakhstan – 220V – 50Hz
Kiribati – 240V – 50Hz
Korea, South – 220V – 60Hz
Korea, North – 220V – 50Hz
Kuwait – 240V – 50Hz
Laos – 230V – 50Hz
Latvia – 220V – 50Hz
Lebanon – 110/220V – 50Hz
Lesotho – 220V – 50Hz
Liberia – 120V – 60Hz
Libya – 127V* 50Hz
Lithuania – 220V – 50Hz
Liechtenstein – 230V – 50Hz
Luxembourg – 220V – 50Hz
Macau – 220V – 50Hz
Macedonia – 220V – 50Hz
Madagascar – 220V – 50Hz
Madeira – 220V – 50Hz
Malawi – 230V – 50Hz
Malaysia – 240V – 50Hz
Maldives – 230V – 50Hz
Mali – 220V – 50Hz
Malta – 240V – 50Hz
Martinique – 220V – 50Hz
Mauritania – 220V – 50Hz
Mauritius – 230V – 50Hz
Mexico – 127V – 60Hz
Micronesia (Federal States of) – 120V – 60Hz
Monaco – 127/220V – 50Hz
Mongolia – 220V 50Hz
Montenegro – 220V – 50Hz
Montserrat (Leeward Is.) – 230V – 60Hz
Morocco – 127/220V* 50Hz
Mozambique – 220V – 50Hz
Myanmar (formerly Burma) – 230V – 50Hz
Namibia – 220V – 50Hz
Nauru – 240V – 50Hz
Nepal – 230V – 50Hz
Netherlands – 230V – 50Hz
Netherlands Antilles – 127/220V* 50Hz
New Caledonia – 220V – 50Hz
New Zealand – 230V – 50Hz
Nicaragua – 120V – 60Hz
Niger – 220V – 50Hz
Nigeria – 240V – 50Hz
Northern Ireland (see United Kingdom)
Norway – 230V – 50Hz
Okinawa – 100V* – 60Hz
Oman – 240V* – 50Hz
Pakistan – 220V – 50Hz
Palmyra Atoll – 120V – 60Hz
Panama – 110V* – 60Hz
Papua New Guinea – 240V – 50Hz
Paraguay – 220V – 50Hz
Peru – 220V* – 60Hz*
Philippines – 220V – 60Hz
Poland – 230V – 50Hz
Portugal – 230V – 50Hz
Puerto Rico – 120V – 60Hz
Qatar – 240V – 50Hz
Reunion Island – 220V 50Hz
Romania – 230V – 50Hz
Russia – 220V – 50Hz
Rwanda – 230V – 50Hz
St. Kitts and Nevis (Leeward Is.) – 230V – 60Hz
St. Lucia (Windward Is.) – 240V – 50Hz
St. Vincent (Windward Is.) – 230V – 50Hz
Samoa – 230V – 50Hz
Saudi Arabia – 127/220V – 60Hz
Scotland (See United Kingdom)
Senegal – 230V – 50Hz
Serbia – 220V – 50Hz
Seychelles – 240V – 50Hz
Sierra Leone – 230V – 50Hz
Singapore – 230V – 50Hz
Slovak Republic – 230V – 50Hz
Slovenia – 220V – 50Hz
Somalia – 220V* – 50Hz
South Africa – 220/230V* – 50Hz
Spain – 230V – 50Hz
Sri Lanka – 230V – 50Hz
Sudan – 230V – 50Hz
Suriname – 127V – 60Hz
Swaziland – 230V – 50Hz
Sweden – 230V – 50Hz
Switzerland – 230V – 50Hz
Syria – 220V – 50Hz
Tahiti – 220V – 60Hz
Tajikistan – 220V – 50Hz
Taiwan – 110V – 60Hz
Tanzania – 230V – 50Hz
Thailand – 220V – 50Hz
Togo – 220V* 50Hz
Tonga – 240V – 50Hz
Trinidad & Tobago – 115V – 60Hz
Tunisia – 230V – 50Hz
Turkey – 230V – 50Hz
Turkmenistan – 220V – 50Hz
Uganda – 240V – 50Hz
Ukraine – 220V – 50Hz
United Arab Emirates – 220V* – 50Hz
United Kingdom – 230V* – 50Hz
United States of America – 120V – 60Hz
Uruguay – 220V – 50Hz
Uzbekistan – 220V – 50Hz
Vanuatu – 230V – 50Hz
Venezuela – 120V – 60Hz
Vietnam – 127/220V* – 50Hz
Virgin Islands (British and U.S.) – 115V – 60Hz
Wales (See United Kingdom)
Yemen, Rep. of – 220/230V – 50Hz
Zambia – 230V – 50Hz
Zimbabwe – 220V – 50Hz
* Voltage variations can occur and are common
