One of the most common questions travelers have is whether they need a voltage converter or just a plug adapter. This guide explains the difference and helps you decide.
Adapter vs. Converter
| Plug Adapter | Voltage Converter | |
|---|---|---|
| Purpose | Changes plug shape | Changes voltage |
| Cost | $5-20 | $20-100+ |
| Size | Pocket-sized | Heavy, bulky |
| Most travelers need | Yes | Rarely |
When You Only Need an Adapter
If your device says "INPUT: 100-240V" on the power brick or label, you only need a plug adapter. This includes:
All smartphone chargers
Laptop chargers
Tablet chargers
Camera battery chargers
Most electric shavers
USB charging devices
When You Need a Converter
If your device says "INPUT: 120V" only, you need a voltage converter when traveling to 220-240V countries. Common items:
Hair dryers (most)
Curling irons and flat irons
Some electric toothbrushes
American coffee makers
Older electronics
What Happens Without a Converter?
Plugging a 120V device into a 220V outlet will:
- Cause the device to run at double speed/heat
- Likely burn out the motor or heating element
- Potentially cause a fire or electrical damage
- Void any warranty
Better Alternatives to Converters
Voltage converters are heavy and can be unreliable. Consider these alternatives:
- Buy dual-voltage versions: Many hair dryers and curling irons come in travel versions that work on 100-240V.
- Buy locally: Hair dryers are inexpensive. Buy one at your destination and leave it or donate it.
- Use hotel amenities: Most hotels provide hair dryers in rooms.
- Leave it home: If you're only traveling for a short time, consider going without.
How to Check Your Device
- Find the power adapter or charging brick
- Look for small text that says "INPUT:" followed by voltage
- If it says "100-240V" or "100V-240V" - you only need an adapter
- If it says only "120V" - you need a converter for 220V countries