# PlugVoltage

> Travel power-compatibility verdict engine. Answers one question for travelers: "Will my specific device work in this specific country, and what — if anything — do I need to buy?" Each answer is a deterministic, safety-first verdict in one of seven states.

PlugVoltage is a free, static reference. Verdicts are computed by a deterministic rules engine — not a language model — and fail safe toward "check the label" whenever data is ambiguous. Always confirm the voltage range printed on your device's label before plugging in abroad. This is device-safety guidance (will the device survive), not human electrical-safety or medical advice.

## How verdicts work

- Seven verdict states: `WORKS_DIRECTLY`, `NEEDS_ADAPTER_ONLY`, `NEEDS_CONVERTER`, `NEEDS_ADAPTER_AND_CONVERTER`, `DO_NOT_USE_HIGH_RISK`, `CHECK_LABEL`, `UNKNOWN`.
- A plug adapter changes only the plug shape — it never changes the voltage.
- Dual-voltage devices (labelled `100–240V`) are safe on voltage worldwide; they need at most a plug adapter.
- A single-voltage device on mismatched voltage needs a voltage converter rated above its wattage.
- High-watt heating appliances on mismatched voltage are flagged `DO_NOT_USE_HIGH_RISK`; we do not recommend a converter for them — use a dual-voltage model or buy locally.
- When voltage data is unknown or a region is mixed-voltage, the verdict is `CHECK_LABEL` / `UNKNOWN`, never "it works".

## Core tools

- [Power checker](https://plugvoltage.com/calculator/): interactive device × country compatibility checker
- [Trip planner](https://plugvoltage.com/trip-planner/): multi-device packing verdict for one destination
- [Converter sizing](https://plugvoltage.com/converter-sizing/): wattage and headroom calculator for voltage converters
- [Devices](https://plugvoltage.com/devices/): per-device guides — "can I use my [device] abroad"
- [Countries & outlets](https://plugvoltage.com/outlets/): voltage, frequency, and plug types by country

## Reference

- [Plug types](https://plugvoltage.com/plug-types/): Type A–N plug and socket reference
- [Guides & FAQ](https://plugvoltage.com/guides/): adapter vs converter, dual-voltage, and related topics
- [Guides RSS](https://plugvoltage.com/guides/rss.xml): RSS feed for travel power guides

## Routes & buying guides

- [Travel electricity checklist (free PDF)](https://plugvoltage.com/travel-electricity-checklist/): printable pre-trip power checklist
- Country-to-country corridor guides, e.g. [USA → Japan](https://plugvoltage.com/from/united-states/to/japan/)
- Best travel adapter by country, e.g. [best adapter for Japan](https://plugvoltage.com/best/travel-adapter-for-japan/)

## Methodology & data

- [Methodology](https://plugvoltage.com/methodology/): decision order, hard safety rules, limits, and source policy.
- [Data landing page](https://plugvoltage.com/data/): human-readable dataset description, license, citation snippet, and downloads.
- Machine-readable dataset: [power.json](https://plugvoltage.com/data/power.json) — voltage, frequency, and plug types for every country, free to use with attribution.
- CSV downloads: [countries.csv](https://plugvoltage.com/data/countries.csv) and [plug-types.csv](https://plugvoltage.com/data/plug-types.csv).
- Verdicts are deterministic — computed by a rules engine, not a language model — and fail safe to "check the label" whenever data is ambiguous. Each country record carries a `source` and an ISO-8601 `lastReviewed` date.

## About

- [About](https://plugvoltage.com/about/)
- [Affiliate disclosure](https://plugvoltage.com/disclosure/)