HomeVoltage by country110V vs 220V
110V vs 220V: which countries use which?
The world runs on two voltage families. 37 countries and territories use 100–127 V ("110 V"), 185 use 220–240 V ("220 V") and 4 use both. Chargers marked INPUT 100–240 V work in all of them with just a plug adapter; single-voltage appliances only work in their own family.
What it means for your devices
| Device | Usually | Crossing between 110 V and 220 V |
|---|---|---|
| Phone, laptop or USB charger | Dual voltage | Fine with a plug adapter |
| Camera battery charger | Dual voltage | Fine with a plug adapter |
| Electric shaver | Varies by model | Check the label: fine if it says 100–240 V |
| CPAP machine | Varies by model | Check the label: fine if it says 100–240 V |
| Hair dryer or straightener | Single voltage | Needs a step-down or step-up converter, or a dual-voltage model |
| Kettle or other appliance | Single voltage | Needs a step-down or step-up converter, or a dual-voltage model |
How to read the INPUT label · Adapter or converter? · Check a trip
Countries on 100–127 V (37)
Asia: Japan (100 V), Taiwan (110 V)
Central America & Caribbean: Anguilla (110 V), Aruba (127 V), Bahamas (120 V), Barbados (115 V), British Virgin Islands (110 V), Cayman Islands (120 V), Costa Rica (120 V), Cuba (110 V), Curaçao (127 V), Dominican Republic (120 V), El Salvador (115 V), Guatemala (120 V), Haiti (110 V), Honduras (120 V), Jamaica (110 V), Nicaragua (120 V), Panama (120 V), Puerto Rico (120 V), Sint Maarten (110 V), Trinidad and Tobago (115 V), Turks and Caicos Islands (120 V), US Virgin Islands (110 V)
North America: Bermuda (120 V), Canada (120 V), Mexico (127 V), United States (120 V)
Oceania: American Samoa (120 V), Guam (110 V), Marshall Islands (120 V), Micronesia (120 V), Palau (120 V)
South America: Colombia (110 V), Ecuador (120 V), Suriname (127 V), Venezuela (120 V)
Countries on 220–240 V (185)
Africa: Algeria, Angola, Benin, Botswana, Burkina Faso, Burundi, Cameroon, Cape Verde, Central African Republic, Chad, Comoros, Djibouti, DR Congo, Egypt, Equatorial Guinea, Eritrea, Eswatini, Ethiopia, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Kenya, Lesotho, Libya, Madagascar, Malawi, Mali, Mauritania, Mauritius, Morocco, Mozambique, Namibia, Niger, Nigeria, Republic of the Congo, Réunion, Rwanda, São Tomé and Príncipe, Senegal, Seychelles, Sierra Leone, Somalia, South Africa, South Sudan, Sudan, Tanzania, Togo, Tunisia, Uganda, Zambia, Zimbabwe
Asia: Afghanistan, Armenia, Azerbaijan, Bangladesh, Bhutan, Brunei, Cambodia, China, Georgia, Hong Kong, India, Indonesia, Kazakhstan, Kyrgyzstan, Laos, Macau, Malaysia, Maldives, Mongolia, Myanmar, Nepal, North Korea, Pakistan, Philippines, Singapore, South Korea, Sri Lanka, Tajikistan, Thailand, Timor-Leste, Turkmenistan, Uzbekistan, Vietnam
Central America & Caribbean: Antigua and Barbuda, Dominica, Grenada, Guadeloupe, Martinique, Montserrat, Saint Kitts and Nevis, Saint Lucia, Saint Martin, Saint Vincent and the Grenadines
Europe: Albania, Andorra, Austria, Belarus, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Falkland Islands, Faroe Islands, Finland, France, Germany, Gibraltar, Greece, Greenland, Guernsey, Hungary, Iceland, Ireland, Isle of Man, Italy, Jersey, Kosovo, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Montenegro, Netherlands, North Macedonia, Norway, Poland, Portugal, Romania, Russia, San Marino, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Ukraine, United Kingdom, Vatican City
Middle East: Bahrain, Iran, Iraq, Israel, Jordan, Kuwait, Lebanon, Oman, Palestine, Qatar, Saudi Arabia, Syria, Turkey, United Arab Emirates, Yemen
Oceania: Australia, Cook Islands, Fiji, Kiribati, Nauru, New Caledonia, New Zealand, Papua New Guinea, Samoa, Solomon Islands, Tonga, Tuvalu, Vanuatu
South America: Argentina, Bolivia, Chile, French Guiana, Paraguay, Peru, Uruguay
Countries with both (4)
Frequently asked questions
What is the difference between 110V and 220V?
They are the two mains voltage families. 37 countries and territories, including the United States, Canada, Mexico and Japan, use 100–127 V (often called 110 V). 185, including the United Kingdom, France, Germany and Italy, use 220–240 V. Within a family the figures are interchangeable for travel purposes.
Can I use a 110V device in a 220V country?
Only if it is dual voltage (the label says INPUT 100–240 V), which almost every phone, laptop and camera charger is. A single-voltage 110–120 V device such as many hair dryers needs a step-down converter, or it will be damaged.
Can I use a 220V device in a 110V country?
A dual-voltage device works with just a plug adapter. A single-voltage 220–240 V device needs a step-up converter, or swap it for a dual-voltage model.
Is 230V the same as 220V or 240V?
220, 230 and 240 V are the same family and interchangeable for travel purposes; likewise 100, 110, 115, 120 and 127 V.
Which countries use both 110V and 220V?
4 countries and territories have both in use: Belize, Brazil, Guyana and Liberia. Check the socket or ask where you are staying.
Nominal figures, data verified 8 September 2026. Full sortable list with frequency and sockets: voltage by country. Sources.