Voltage Guides
Compare 110V, 220V, and 240V standards and read full guides to outlets and plugs by voltage. Brought to you by Flightconnections.
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View on FlightconnectionsVoltage by region
| Voltage | Regions | Countries |
|---|---|---|
| 110–127V (low) | North America, Central America, parts of South America & Asia | 32 |
| 220–230V (high) | Most of Europe, Africa, Asia, Oceania, South America | 161 |
| 240V (high) | UK, Australia, some of Asia & Africa | 13 |
Outlet & plug guides by voltage
110V Outlet Guide
Complete guide to 110V electrical outlets
110V Plug Guide
Everything about 110V power plugs
220V Outlet Guide
Complete guide to 220V electrical outlets
220V Plug Guide
Everything about 220V power plugs
240V Outlet Guide
Complete guide to 240V electrical outlets
240V Plug Guide
Everything about 240V power plugs
Voltage & compatibility
What is the difference between 110V and 220V?
110V (and 120V) is the low-voltage standard used mainly in the Americas and some of Asia. 220–240V is the high-voltage standard used in most of Europe, Africa, Asia, and Oceania. Devices designed for one range may need a voltage converter for the other.
Is my device dual voltage?
Check the power supply label for "INPUT: 100-240V" or similar. If you see 100–240V, your device is dual voltage and only needs a plug adapter, not a voltage converter.
Adapter vs converter?
An adapter changes the plug shape only. A converter changes the voltage. Most travelers with laptops and phones only need an adapter; high-wattage appliances may need a converter or local purchase.