How PlugVoltage Makes a Verdict
PlugVoltage is a deterministic travel-power checker. It compares your device label with the destination grid and fails toward caution when the answer is uncertain.
Caution: This site gives device-compatibility guidance for travelers. It is not a substitute for the device label, manufacturer instructions, local accommodation guidance, or a qualified electrician.
The decision order
| 1. Destination profile | If the country profile is missing, the checker returns unknown instead of guessing. |
|---|---|
| 2. Device voltage | Unknown voltage always becomes check your label. A dual-voltage 100–240V device clears the voltage risk. |
| 3. Mixed-voltage countries | If local voltage varies by city or region, non-dual-voltage devices get a check-label/city warning. |
| 4. High-watt heating devices | High-watt heat tools on mismatched voltage get a do-not-use result instead of a converter upsell. |
| 5. Plug shape | A plug adapter is considered only after voltage is safe or after a converter is genuinely required. |
| 6. Frequency and grounding | Frequency and grounding add warnings, but do not override the main voltage verdict. |
Hard safety rules
- A plug fitting never makes a voltage mismatch safe.
- Unknown device voltage means check the label first.
- Mixed-voltage destinations require local confirmation for non-dual devices.
- High-watt heating tools with a voltage mismatch should not be pushed toward travel converters.
- Dual-voltage devices clear voltage risk, but may still need a plug adapter.
Data sources and review dates
Country pages display their source string and last-reviewed date. The machine-readable data is available at /data/ as JSON and CSV.
Some countries have city-level or regional exceptions. PlugVoltage treats these as caution states rather than pretending that one national answer covers every outlet.
What the site does not do
PlugVoltage does not certify wiring, inspect hotels, validate counterfeit adapters, or guarantee a specific outlet in a specific room. It also does not fabricate expert reviewers or product tests. When a real reviewer or product test exists, the site should show it visibly.